Analog Hygrometer Options: 7 Best Analog Hygrometers


analog hygrometer accuracy
It’s difficult to match the elegance or style of analog hygrometers

Sometimes the simplest things in life are the most useful and an analog hygrometer is a perfect example. A hygrometer is a sensitive measuring instrument. It is used to measure the relative humidity – the amount of moisture – in the air. People’s opinions vary on what the best analog hygrometer is, but at its essence, it needs to be accurate, reliable, and functional.

They are useful in many different applications. It can be as simple as being used to measure the humidity in our home or on our back porch. If we are growing or caring for plants then a hygrometer is an essential device. Even if we just want to preserve and protect the books in our library then a hygrometer is a valuable and useful device. But with so many devices on the market, what makes the best analog hygrometer?

In this article, we will look at many different aspects of hygrometers. We will look at why you might need one, how they work, and the different types, and share some of our picks to help you choose the best analog hygrometer for your needs.

ProductTypeProduct WeightProduct Dimensions (inches)WarrantyStarsPrice and More Info
Zoo Med EconomyZoo Med Economy Analog Dual Thermometer and Humidity GaugeAnalog6.4 ounces6 x 1 x 4n/a
4.4 out of 5 stars
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Caliber 4R GoldCaliber 4R Gold Digital Analog HygrometerDigital / Analog1.6 ounces2.7 x 2.6 x 1Please contact the seller directly.
4.2 out of 5 stars
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Bjerg Instruments Antique Brass 8”Bjerg Instruments Antique Brass 8” Indoor Outdoor Thermometer HygrometerAnalog0.9 pounds3.1 x 9.3 x 9.7Please contact the seller directly.
4.2 out of 5 stars
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General Tools A600FCGeneral Tools A600FC High Temperature Analog Thermo-HygrometerAnalog7.2 ounces5.8 x 5.8 x 5.8Please contact the seller directly.
4.4 out of 5 stars
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La Crosse Technology 18”La Crosse Technology 18” Atomic Outdoor Clock Temperature HumidityAnalog5.5 pounds2.2 x 18 x 181 year
4.1 out of 5 stars
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Lily’s Home Analog Weather Station With Clock, Hygrometer, BarometerLily's Home Analog Weather StationAnalog2.15 pounds14 x 8 x 4n/a
4.3 out of 5 stars
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Lily’s Home AnalogLily’s Home Analog Weather Station with Galileo Thermometer, Hygrometer, BarometerAnalog1.9 pounds13.5 x 9 x 6.4Please contact the seller directly.
4.7 out of 5 stars
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What Is A Hygrometer?

best analog hygrometer
Many of the best analog hygrometers come with additional tools like temperature and barometer gauges.

A hygrometer is a sensitive measuring instrument. It measures one thing and one thing only. It is used to measure the relative humidity – the amount of moisture – in the air.

Hygrometers come in different styles and designs, but they fall into 2 main categories… These are digital and analog hygrometers.

For many, the best analog hygrometer comes with temperature and barometer gauges built-in, making them mini weather stations.

What Are The Different Types of Hygrometers?

There are two basic types of hygrometers. They fall under the categories of analog or digital.

Analog Hygrometers

An analog hygrometer is a device used to measure the humidity level in the air. It typically consists of a mechanical system that responds to changes in humidity, displaying the readings on a dial or a scale. The most common types of analog hygrometers are bimetallic strip hygrometers, hair hygrometers, and psychrometers.

Bimetallic Strip Hygrometers:

  • Bimetallic strip hygrometers employ the concept of thermal expansion to measure humidity changes.
  • The hygrometer consists of two different metal strips bonded together, each with a different coefficient of thermal expansion. Typically, brass and steel are used for this purpose.
  • As humidity increases, the moisture content in the air affects the thermal properties of the metal strips. One strip expands more than the other due to its higher coefficient of expansion, causing the bonded strips to bend or curve.
  • This bending motion is transferred through a mechanical linkage system to the hygrometer’s dial, which displays the corresponding humidity reading.
  • Pros
    • Robust and Durable: Bimetallic strip hygrometers have a sturdy mechanical design, which makes them resistant to damage and capable of withstanding harsh environmental conditions.
    • Faster Response Time: Compared to hair hygrometers, bimetallic strip hygrometers generally have a faster response time, making them more suitable for applications where quick humidity changes need to be detected.
    • Reasonable Accuracy: Bimetallic strip hygrometers can provide reasonably accurate humidity measurements, especially when used within their specified range and properly calibrated.
  • Cons
    • Limited Range: Bimetallic strip hygrometers have a more limited operating range compared to hair hygrometers. They typically work well in humidity ranges between 20% to 90% relative humidity.
    • Calibration: Like hair hygrometers, bimetallic strip hygrometers also require periodic calibration to maintain accuracy, which may involve specialized equipment.
    • Mechanical Hysteresis: Bimetallic strip hygrometers can exhibit hysteresis, which means that they may display different readings for increasing and decreasing humidity levels under the same conditions.
    • Mechanical Wear: Over time, the movement of the bimetallic strip can wear down, affecting the accuracy and reliability of the hygrometer.

Hair Hygrometers:

  • Hair hygrometers utilize the principle of hygroscopic materials, where certain substances, like human or animal hair, change in length with variations in humidity levels.
  • Inside the hygrometer, a bundle of hair is attached to a mechanical linkage system. As humidity increases, the hair absorbs moisture from the air and expands, causing the mechanical linkage to move.
  • This movement translates into the rotation of a needle on the hygrometer’s dial, indicating the current humidity level on a calibrated scale.
  • Pros
    • Wide Operating Range: Hair hygrometers can measure humidity over a broad range, typically from 20% to 100% relative humidity, making them suitable for various environments and applications.
    • Simple and Reliable: Hair hygrometers have a straightforward design and do not require a power source, making them dependable and low-maintenance instruments.
    • Slow Response Time: While this might be seen as a disadvantage in some scenarios, the slow response time of hair hygrometers can be beneficial in certain applications where rapid changes in humidity need to be dampened or smoothed out.
  • Cons
    • Calibration: Hair hygrometers require periodic calibration to maintain accuracy. The calibration process can be time-consuming and may require specialized equipment.
    • Sensitivity to Contaminants: The accuracy of hair hygrometers can be affected by contaminants in the environment, such as dust, oils, or chemical fumes, which can adhere to the hair and alter its response.
    • Limited Precision: Hair hygrometers often provide humidity readings with limited precision, typically to the nearest 5% or 10%. They might not be suitable for applications that require high-precision measurements.


  • A psychrometer, also known as a wet-and-dry bulb hygrometer, is an analog instrument used to measure humidity by comparing the readings of two thermometers, one of which has a wet bulb and the other a dry bulb.
  • The wet bulb thermometer is wrapped with a moistened wick, and both thermometers are exposed to the air. As the water evaporates from the wet bulb, it causes cooling, and the wet bulb temperature drops below the dry bulb temperature.
  • The rate of evaporation and the cooling effect on the wet bulb thermometer depends on the air’s humidity level. Higher humidity slows down evaporation and results in a smaller temperature difference between the wet and dry bulb thermometers.
  • By comparing the temperatures of the wet and dry bulbs, the relative humidity can be determined using psychrometric charts or formulas.
  • Pros
    • High Accuracy: Psychrometers can provide accurate and precise humidity measurements when used correctly and calibrated appropriately. They are well-suited for applications where precise humidity data is required.
    • No Power Source Required: Psychrometers do not rely on external power sources, making them portable and suitable for field use, especially the sling psychrometer variant.
    • Direct Measurement of Relative Humidity: Unlike some other hygrometer types that measure changes in material properties, psychrometers directly measure relative humidity, which can be advantageous in certain scenarios.
    • Low Cost: Psychrometers are often more affordable than some advanced digital hygrometers, making them accessible for educational purposes and in situations where budget constraints are a concern.
  • Cons
    • Calibration and Skill Required: To achieve accurate results, psychrometers require regular calibration and skilled operators. Proper use and understanding of psychrometric charts and calculations are necessary to interpret the readings correctly.
    • Time-Consuming: The process of taking humidity measurements with a psychrometer can be time-consuming, especially with the traditional sling psychrometer, where multiple readings and calculations are involved.
    • Sensitivity to Environmental Factors: Psychrometers can be influenced by factors such as air currents, ambient temperature, and exposure to direct sunlight, affecting the accuracy of measurements.
    • Limited Range: Psychrometers are typically effective in moderate to high humidity conditions, and they might not be suitable for measuring very low humidity levels or extremely dry environments.
    • Bulkier Design: Traditional psychrometers, especially sling psychrometers, have a bulkier and more complex design compared to other hygrometer types, which can be inconvenient in certain situations.

Digital Hygrometers

analog humidity meter
A digital or analog humidity meter will assist you in keeping a safe level of humidity in your surroundings.

A digital hygrometer is an electronic device designed to measure and display the humidity level in the air, generally with higher accuracy and precision compared to analog hygrometers. Digital hygrometers use various sensors and electronic components to provide real-time humidity readings.

The majority of digital hygrometers use a resistive or capacitive sensor. Electricity flows through a small piece of moisture-absorbent material that is exposed to the air. When the amount of moisture absorbed changes, the electrical properties do as well. This is the data used to calculate the relative humidity. Once the calculation is complete, a measurement is sent to the digital display which provides a numerical value. This is the humidity reading for the area.

For more information on digital hygrometers, make sure you check out this article.

Our Picks Of The Best Analog Humidity Meter Options

If you’re not a fan of digital devices, there are still some great hygrometers out there for you! There are many factors in determining the quality of a hygrometer, including the materials it is made of, the design and durability, whether it is battery-powered or not, the extra features and functionality it comes with, and most importantly, accuracy.

The analog hygrometers listed below are some of our favorites. Check them out below:

Zoo Med Economy Analog Dual Thermometer and Humidity Gauge

Zoo Med Economy Analog Dual Thermometer and Humidity Gauge

Featuring easy-to-read analog temperature meter dials, this product allows you to monitor both the temperature and humidity with one unit. The dials contain color-coded zones to help you determine when heat and moisture levels are in need of correction.

This analog thermometer hygrometer unit is primarily designed for terrariums or other small enclosures but can be used for other applications as well.

The entire piece has a Velcro back to allow for easy mounting and removal for cleaning purposes or for placing in a different location.


Inexpensive tool for measuring both temperature and air moisture content
Works well
Easy to read and color codes help identify safety zones
Uncomplicated design with dials for each reading – temperature, and humidity


Velcro backing is not very effective in some applications
Cheap-looking design
Readings are not very accurate when compared to more precise instruments
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Caliber 4R Gold Digital/Analog Hygrometer

Caliber 4R Gold Digital

This is an accurate digital/analog monitor with an advanced humidity sensor that is precise to 1% plus or minus. The unit can be recalibrated by the user and the design features a magnetic mount.

The dial is color-coded for easy reference and there is a battery included. Following manual analog hygrometer calibration, this unit is set to go.


Attractive-looking measuring device
Once calibrated the accuracy is extremely good
Color codes include a Green Zone for those who use humidors to store cigars


Needs to be calibrated once the package arrives
Readings are slower than other similar designs
The display can only be read from viewing directly from the front
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Bjerg Instruments Antique Brass 8” Indoor Outdoor Thermometer Hygrometer

Indoor Outdoor Thermometer Hygrometer

The large 8-inch diameter of this indoor/outdoor thermometer and humidity gauge is perfect for many different applications. The 5.5-inch diameter dial face is easy to read and displays Celsius and Fahrenheit temperatures.

The analog humidity gauge is at the bottom of the unit. Featuring steel construction, this stylish instrument comes with an antique brass finish and has a glass lens.


Very attractive, solid design
High level of accuracy with the readings
Works extremely well inside or outside of the home


A bit heavier than many units so hanging it up requires some thought for placement
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General Tools A600FC High-Temperature Analog Thermo-Hygrometer

High-Temperature Analog Thermo-Hygrometer

Need to keep an eye on how your humidifier or dehumidifier is doing? Then this could be your choice. The attractive analog hygrometer thermometer design features a stainless steel case and flange mount make this an attractive-looking unit… but there is more to it than meets the eye.

The temperature range that can be monitored goes from 30 to 250 degrees F (-1 to 121 degrees C) and the accuracy is noted at +/- 1.8° F (+/- 1° C).

The relative humidity range is from 10 to 95% and is accurate to +/- 6% of the reading. The temperature resolution is 2 degrees F (1 degree C) and RH resolution is 2% making this one of the best analog hygrometers for ease of use and accuracy.


Well-made, sturdy, solid construction with a high-quality appearance
Extremely accurate


Cannot be used outdoors
Reported as having mounting holes but did not come with screws included
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La Crosse Technology 18” Atomic Outdoor Clock, Temperature, Humidity Meter

La Crosse Technology 18” Atomic Outdoor Clock Temperature Humidity

This is truly a multi-purpose instrument. The time feature is radio-controlled and includes the analog hygrometer and thermometer readouts. It is also designed for use either indoors or outdoors.

You can even select from four different US time zones for accuracy. This time, temperature, and analog humidity meter are powered by a single AA battery (not included).


Will automatically adjust time according to the nearest atomic-powered time station
Attractive design that fits in wherever it is placed
Solid construction
The analog hygrometer accuracy provides reliable readings


Time will automatically set as soon as a battery is installed, this may be unnerving for some
The default time is Pacific but can be changed to the correct time zone with optional buttons
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Lily’s Home Analog Weather Station with Clock, Hygrometer, Barometer

Lily's Home Analog Weather Station

Designed as a traditional weather station, this work of art, as the manufacturer refers to it, can fit comfortably in a library, study, office, or restaurant setting.

The weather station features a rich wood frame and measures more than just temperature. Other readings come from barometric pressure and humidity. It also contains an analog clock.

The storm glass barometer looks like a science project and it does provide much in the way of a conversation starter. This analog hygrometer thermometer is unique for that reason.


Classic look with the wood and glass elements
A real conversation starter depending on where you use it
Features a combination of temperature humidity and barometer gauges


Not as accurate as expected
It is fragile
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Lily’s Home Analog Weather Station with Galileo Thermometer, Hygrometer, Barometer

Lily’s Home Analog Weather Station

This unit has an 11-inch Galileo thermometer on an oak base. There’s also a glass etched barometer and wood-framed hygrometer and blue-colored powder all included.

There are a total of 5 different color-coded floats in the 11.4-inch tall Galileo thermometer. Each has a gold-plated tag noting temperatures between 64 and 80 degrees F.

The glass barometer has an etched globe with blue powder, a plastic syringe, and a tube to allow you to insert colored water into the globe. The oak-framed analog hygrometer measures 2.5 inches in diameter. All instructions are included.


Attractive design made with quality products
Functional readings from all instruments make this a useful tool
Great design for an analog thermometer hygrometer
Educational in teaching Galileo’s original thermometer concept


Instructions are included but are a little vague in places
Some users report damage resulting from shipping
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What Are The Benefits of A Hygrometer?

There is no doubt that a device that measures humidity can come in handy in our daily lives. But what are the real benefits of such a tool?

Hygrometers allow us to monitor and then adjust the conditions of our living space for more comfort. When this occurs we improve the conditions that affect our health.

You could say that the best analog hygrometers are great tools to have to ensure a comfortable environment for ourselves. But it is not just our personal health and well-being that is improved with proper humidity levels.

They are also handy tools for monitoring humidity levels for specific applications, such as in terrariums, humidors, and other locations where specific humidity levels are critical.

Humidity also has an impact on our pets and also can cause damage to homes and property if not properly controlled.

A hygrometer used in conjunction with a humidifier, dehumidifier, or other humidity control systems can be a great investment to protect your health and valuables.

Why Do You Need A Hygrometer?

Hygrometers allow you to accurately monitor the moisture content in the air you breathe. In a home, when humidity is high, condensation can appear on walls, ceilings, windows, and furniture, which can lead to the formation of mold and mildew.

With high humidity levels indoors there can be different kinds of damage. Mold and mildew can affect allergies and promote corrosion or warping in wood construction and furniture.

For more information on how to get rid of condensation, have a look at this article.

The opposite end of the scale is also damaging. With low humidity, the air is dry and can affect breathing conditions in many people. There are other concerns as well.

Drier air can result in skin irritations, rashes, cracked skin, and itchiness. Dry air can also cause problems with furniture causing it to crack and break.

For information on the best humidifiers that you can use to alleviate low humidity conditions, see this article.

A digital or analog humidity meter will assist you in keeping a safe level of humidity in your immediate surroundings. A hygrometer can be used with a dehumidifier or humidifier to control relative humidity.

Analog Hygrometer History

Early Developments and Inventors

The origins of hygrometers date back to ancient times when people began to recognize the significance of humidity in various aspects of life. One of the earliest known inventors of a hygrometer-like device was the Greek philosopher and mathematician, Diogenes of Apollonia, in the 5th century BCE. He created a simple device known as the “Airscope,” which was a hollow sphere filled with water. Diogenes observed how the water level in the sphere fluctuated with changes in the surrounding air’s moisture content.

In the 15th century, the renowned Italian artist and inventor, Leonardo da Vinci, also delved into humidity measurement. He designed a hygrometer using a porous material that would change its dimensions with humidity variations. However, it is believed that his invention was never built during his lifetime.

Evolution and Improvements Over Time

The true advancement of hygrometers occurred during the 17th and 18th centuries. In 1664, the Italian physician and naturalist, Francesco Folli, constructed a crude hygrometer using a pig’s bladder filled with wool. As the humidity changed, the bladder would expand or contract, indicating the relative humidity.

However, it was not until the late 18th century that the most significant developments in hygrometers were made. Swiss physicist and horologist, Abraham-Louis Breguet, is credited with the invention of the hair hygrometer around 1783. Breguet’s hygrometer used a strand of human or animal hair attached to a mechanical linkage. As humidity changed, the hair would either lengthen or contract, causing the linkage to move and display the humidity reading.

In the early 19th century, Swiss physicist Johann Heinrich Lambert improved upon Breguet’s design by incorporating a scale to quantify humidity readings accurately. This made the hair hygrometer more practical and widely adopted for scientific purposes, weather forecasting, and agricultural applications.

Role in History

  1. Weather Forecasting:
    • Analog hygrometers, especially hair hygrometers, played a crucial role in early weather forecasting. Meteorologists and weather observers used these devices to measure humidity levels, which provided valuable information for predicting weather patterns and changes.
    • Understanding humidity was instrumental in identifying conditions conducive to rain, fog, or dry spells, helping farmers plan their agricultural activities accordingly.
  2. Agriculture:
    • Analog hygrometers were vital tools in agriculture, as they helped farmers monitor and optimize the moisture levels in the soil and air for crop cultivation.
    • They were also used to control the humidity inside greenhouses, ensuring the ideal growing conditions for various plants.
  3. Industry:
    • In industrial settings, analog hygrometers were utilized to maintain optimal humidity levels for specific manufacturing processes.
    • Industries such as textiles, food processing, pharmaceuticals, and electronics relied on hygrometers to ensure product quality and prevent issues related to excess moisture or dryness.

Although digital and electronic hygrometers have largely replaced analog hygrometers in modern applications due to their increased accuracy and convenience, these early inventions were pioneering steps that paved the way for understanding and managing humidity in a wide range of fields.

Accuracy and Calibration

Factors Influencing Accuracy

The accuracy of analog hygrometers can be influenced by several factors, which must be taken into consideration to obtain reliable humidity measurements:

  1. Aging and Wear: Over time, the components of analog hygrometers may experience wear and tear, leading to reduced accuracy. Regular maintenance and calibration can help mitigate these effects.
  2. Environmental Conditions: Analog hygrometers can be sensitive to changes in temperature, pressure, and exposure to contaminants. Fluctuations in these factors can impact the accuracy of the readings.
  3. Humidity Range: Analog hygrometers typically have a specific range within which they provide accurate measurements. Using them beyond their designated range may result in less reliable readings.
  4. Calibration Intervals: The calibration of analog hygrometers can drift over time, and the frequency of calibration will depend on the specific type and manufacturer’s recommendations.

Calibration Procedures for Analog Hygrometers

Calibration is a crucial process to ensure the accuracy of analog hygrometers. While calibration methods can vary depending on the specific type of hygrometer, here are some general steps typically involved in the calibration process:

  1. Reference Standards: Calibration is performed by comparing the readings of the analog hygrometer with those of a known and highly accurate humidity reference standard. This standard can be a calibrated digital hygrometer or a psychrometer.
  2. Calibration Points: The hygrometer is calibrated at various humidity levels to cover its intended operating range effectively. These calibration points should be evenly spaced throughout the range.
  3. Adjustment: If there are discrepancies between the readings of the hygrometer and the reference standard, adjustments can be made to correct the calibration.
  4. Record Keeping: Detailed records of the calibration process, including calibration points, adjustments made, and results, should be maintained for reference and quality control purposes.

Comparing Accuracy with Digital and Electronic Hygrometers

analog hygrometer with built-in thermometer

Digital and electronic hygrometers generally offer higher accuracy compared to analog hygrometers due to their advanced sensor technology and digital signal processing capabilities. Some key points to consider when comparing accuracy are:

  1. Precision: Digital and electronic hygrometers can often provide humidity readings with higher precision, sometimes down to decimal points, enabling more detailed measurements.
  2. Response Time: Digital and electronic hygrometers typically have faster response times, quickly reflecting changes in humidity levels, while analog hygrometers may have a slower response due to mechanical limitations.
  3. Environmental Stability: Digital and electronic hygrometers may be less affected by external environmental factors such as temperature and contaminants, leading to more consistent and reliable readings.
  4. Calibration: While all hygrometers require calibration, digital and electronic hygrometers may have more straightforward calibration procedures and may maintain calibration better over time compared to analog models.

Applications of Analog Hygrometers

Domestic Use

Analog hygrometers find various applications in domestic settings, enhancing comfort and maintaining optimal conditions for specific activities:

  1. Indoor Comfort: Analog hygrometers are commonly used in homes to monitor indoor humidity levels. Maintaining a comfortable humidity range (usually between 40% to 60% relative humidity) can promote better respiratory health, reduce static electricity, and prevent issues like mold growth.
  2. Home Brewing: In the art of home brewing, humidity control plays a vital role in fermentation and the aging process. Analog hygrometers are used to monitor humidity levels in fermentation chambers or aging cellars to ensure the ideal conditions for producing high-quality beer, wine, or spirits.
  3. Musical Instruments: Analog hygrometers are often included in instrument cases to protect sensitive musical instruments, such as wooden string instruments (e.g., guitars, violins). Proper humidity control helps prevent cracking, warping, or other damage caused by fluctuations in humidity.

Industrial Use

In various industrial settings, analog hygrometers serve essential roles in ensuring product quality, process efficiency, and environmental safety:

  1. Manufacturing Processes: In industries like pharmaceuticals, textiles, and food production, controlling humidity during manufacturing processes is crucial. Analog hygrometers are used to monitor humidity levels to maintain product integrity, prevent spoilage, and optimize production conditions.
  2. Storage Facilities: In warehouses and storage facilities, maintaining proper humidity levels is essential for preserving the quality of stored goods, such as perishable foods, pharmaceuticals, and sensitive electronic components. Analog hygrometers assist in monitoring storage conditions and prevent damage from moisture or dryness.

Scientific Use

Analog hygrometers continue to play a role in scientific research and the preservation of cultural artifacts:

  1. Research and Laboratories: Analog hygrometers are used in various scientific research applications, especially in environments where electronic devices might be unsuitable due to potential interference or sensitivity to certain conditions. They are commonly employed in environmental monitoring, meteorology, and controlled experiments.
  2. Museums and Archives: Maintaining appropriate humidity levels is critical for preserving artifacts, documents, and works of art in museums and archives. Analog hygrometers, often paired with dehumidifiers or humidifiers, help create stable environmental conditions to prevent degradation and ensure the longevity of historical items.

Despite the rise of digital and electronic hygrometers, analog hygrometers still hold value in specific applications due to their simplicity, reliability, and ability to function without external power sources. In settings where precision to the decimal point is not required, analog hygrometers continue to be practical tools for monitoring and controlling humidity levels.

Maintenance and Care

Cleaning and Servicing Analog Hygrometers

Proper maintenance and regular servicing are essential to ensure the accuracy and longevity of analog hygrometers. Here are some key steps for cleaning and servicing these instruments:

  1. Dusting and Cleaning: Regularly dust off the hygrometer’s exterior using a soft, dry cloth to prevent the accumulation of dirt and debris. Avoid using water or harsh cleaning agents that could damage the instrument.
  2. Calibration Check: Periodically check the calibration of the analog hygrometer to ensure accurate readings. Calibration can drift over time due to environmental factors or component aging. Follow the manufacturer’s guidelines for calibration or seek professional calibration services.
  3. Sensor Inspection: For hair hygrometers, inspect the hair bundle for any signs of damage, contamination, or hair breakage. If necessary, replace the hair bundle with a new one to maintain accurate readings.
  4. Lubrication (if applicable): Some analog hygrometers may have mechanical parts that require lubrication for smooth operation. Follow the manufacturer’s recommendations for lubrication, if needed.
  5. Storage: Store the hygrometer in a clean and dry environment when not in use. Avoid exposing the instrument to extreme temperatures or humidity levels.

Potential Issues and Troubleshooting

  1. Inaccurate Readings: If the hygrometer consistently provides inaccurate readings, it may require calibration. Perform a calibration check using a reliable humidity reference standard, and adjust the hygrometer if necessary.
  2. Slow Response: If the hygrometer exhibits a slow response to changes in humidity, it might be due to mechanical friction or stiffness. Clean and lubricate the moving parts to improve its responsiveness.
  3. Mechanical Damage: Analog hygrometers with delicate components, such as hair hygrometers, can be susceptible to physical damage. Handle the instrument with care to avoid breakage or misalignment.
  4. Condensation: In some environments, condensation can form on the hygrometer’s surface, affecting accuracy. Ensure proper ventilation and humidity control to minimize condensation.
  5. Calibration Drift: If the hygrometer’s calibration frequently drifts, consider replacing worn-out components or seeking professional repair services.

Longevity and Lifespan

The lifespan of an analog hygrometer can vary depending on its quality, usage, and maintenance. With proper care and regular calibration, a well-built analog hygrometer can last for many years, providing accurate readings throughout its lifespan.

The longevity of hair hygrometers can be affected by the condition of the hair bundle, as hair may degrade over time due to exposure to environmental factors. Bimetallic strip hygrometers, on the other hand, can be more durable due to their mechanical design, but they may still require occasional servicing.

What is the Future of Analog Hygrometers?

Challenges and Opportunities

Analog hygrometers face both challenges and opportunities as technology continues to advance. Some of the key challenges include:

  1. Competition: The increasing popularity of digital and electronic hygrometers, which offer higher accuracy and additional features, poses a challenge to traditional analog models.
  2. Precision Demands: As industries and research fields require higher precision in humidity measurements, analog hygrometers may face limitations in meeting these demands.
  3. Calibration and Maintenance: Analog hygrometers require periodic calibration and maintenance, which can be time-consuming and may require specialized equipment and expertise.

However, analog hygrometers also present certain opportunities:

  1. Nostalgia and Aesthetics: Analog hygrometers appeal to some users for their vintage charm and simplicity. They hold sentimental value and have aesthetic appeal in certain settings.
  2. Niche Applications: In specific applications where high precision is not necessary, analog hygrometers can continue to be practical and cost-effective choices.

Technological Advancements and Improvements

While digital and electronic hygrometers dominate the market, there are opportunities for technological advancements and improvements in analog hygrometers:

  1. Hybrid Designs: Manufacturers could explore hybrid designs that incorporate analog and digital elements. For instance, analog mechanisms might be combined with digital displays or sensor systems to offer greater precision while retaining the analog charm.
  2. Materials and Coatings: Innovations in materials and coatings could improve the accuracy and longevity of analog hygrometers, making them more resilient to environmental influences.
  3. Enhanced Calibration Methods: Developments in calibration techniques could simplify the calibration process for analog hygrometers, reducing the need for specialized equipment.

Niche Markets and Specialized Applications

Analog hygrometers are likely to find a niche in certain specialized applications where their unique features remain advantageous:

  1. Educational Settings: Analog hygrometers can serve as educational tools in classrooms and laboratories to teach the principles of humidity measurement and the history of scientific instruments.
  2. Art and Collectibles: Analog hygrometers might be sought after by art enthusiasts and collectors who appreciate their vintage appeal and wish to preserve art pieces in a traditional manner.
  3. Cultural Preservation: Museums, historical sites, and cultural preservation initiatives may prefer analog hygrometers for showcasing artifacts in exhibits, emphasizing authenticity and historical significance.
  4. Low-Tech and Off-Grid Environments: Analog hygrometers can be valuable in remote or off-grid locations where access to power and digital technologies is limited.

Other Analog Hygrometer FAQs

How do you install an analog hygrometer?

To install an analog hygrometer, you first need to decide where you want to place it. It’s important to place the hygrometer away from direct sunlight, drafts, and other sources of temperature and humidity fluctuations, as this can affect the accuracy of the readings.

Once you have chosen a suitable location, you can mount the hygrometer using its built-in hanger or a separate hook or bracket. Some models also have a stand or base that allows them to sit on a tabletop or shelf.

Before taking any readings after mounting the hygrometer, you should give it at least 24 hours to adjust to the surroundings. The hygrometer will then become more accurate as it becomes acclimated to the temperature and humidity of its surroundings.

Are analog hygrometers accurate?

Digital hygrometers are generally considered to be more accurate than analog hygrometers. While analog hygrometers can be accurate, their readings can be influenced by variables like temperature and humidity variations, and they sometimes need more frequent calibration to keep their accuracy. As opposed to analog hygrometers, digital hygrometers employ cutting-edge technology to deliver accurate and consistent readings that are less prone to variation or inconsistent results. A digital hygrometer is frequently the best option if accuracy and dependability are your top priorities. However, some people still favor the conventional appearance and feel of analog hygrometers and are prepared to put up with the potential for some inaccuracy in exchange for pleasing aesthetics.

How do I calibrate an analog hygrometer?

Calibrating an analog hygrometer involves adjusting the instrument to ensure that it is reading the correct level of humidity. Here are the general steps to calibrate an analog hygrometer:

1. Obtain a calibrated reference, such as a salt test or a commercial calibration kit.
2. Place the hygrometer and the reference in a sealed container for a few hours to allow them to equilibrate.
3. Check the reading on the hygrometer and compare it to the reference reading.
4. If the reading on the hygrometer is off, adjust the calibration screw or knob on the hygrometer to match the reference reading.
5. Repeat the process until the hygrometer consistently reads the correct level of humidity.

It’s important to follow the specific instructions provided with your hygrometer or calibration kit, as the process can vary depending on the type of instrument and reference used. Additionally, it’s recommended to calibrate your analog hygrometer at least once a year, or more frequently if you notice that its readings are consistently inaccurate.

What should I look for when buying an analog hygrometer?

There are a few important things to think about when purchasing an analog hygrometer to make sure you select a dependable and accurate instrument. What to look for includes the following:

– Quality and durability: Choose an analog hygrometer that is well-made and long-lasting, with premium materials that can withstand repeated use and last for years.
– Accuracy: Choose an analog hygrometer that has a history of being accurate. While no instrument can ever provide 100% accurate readings, it’s crucial to pick one that will do so consistently.
– Range: Consider the range of relative humidity values that the hygrometer is capable of measuring. Pick one that is appropriate for the particular use you have in mind, such as a cigar humidor or a gun safe.
– Calibration: To ensure accurate readings, look for an analog hygrometer that is simple to calibrate and has clear instructions for doing so.
– Size and style: Pick an analog hygrometer that fits the room or humidor it will be used in and blends in with the decor.
– Price: The cost of analog hygrometers can vary, but you shouldn’t automatically assume that the most expensive model is the best. Find one that satisfies your requirements for accuracy and quality while staying within your budget.

Can an analog hygrometer be used for both indoor and outdoor humidity measurement?

Analog hygrometers can be used both inside and outside to measure humidity, but changes in temperature and humidity levels can have an impact on how accurate analog hygrometers are. An analog hygrometer can be a dependable and affordable option for measuring humidity in a space or a particular area, like a humidor or a gun safe, when used indoors. However, for outdoor use, digital hygrometers are generally considered to be more accurate and reliable, as they can provide more precise and consistent readings in a wider range of environmental conditions. In order to ensure accurate readings when using an analog hygrometer outdoors, it’s crucial to keep it protected from the elements and calibrate it frequently.

How often should I check and recalibrate my analog hygrometer?

Your need for precision and the circumstances in which you use the analog hygrometer will both have an impact on how frequently you should calibrate and verify your hygrometer. In general, you should calibrate your analog hygrometer as needed to ensure that it is giving correct readings and check its accuracy at least once every 6 to 12 months.

If the device is used in extreme or rapidly changing environments, such as in a humidor or a greenhouse, it may need to be calibrated more frequently. On the other hand, if the device is used in a stable indoor environment and only serves as a general indicator of humidity levels, it may only need to be calibrated occasionally.

If you observe that the readings are regularly incorrect or that the hygrometer is not responding to changes in humidity levels, it could be time to calibrate or replace the hygrometer. It’s also a good idea to keep your analog hygrometer clean and free of debris because this can over time impact its accuracy.

How do I clean and maintain my analog hygrometer?

Proper maintenance and cleaning of your analog hygrometer can help to ensure accurate readings and extend its life. Here are some tips for cleaning and maintaining your analog hygrometer:

– Keep it dry: Make sure to keep your analog hygrometer dry at all times. Excess moisture can damage the instrument and affect its accuracy.
– Use a soft cloth: When cleaning your analog hygrometer, use a soft, lint-free cloth to gently wipe down the surface of the device. Avoid using water or cleaning solutions, as this can cause damage.
– Remove dust and debris: Use a soft-bristled brush or compressed air to remove any dust or debris that may have accumulated on the surface of the hygrometer.
– Check for damage: Regularly inspect your analog hygrometer for any signs of damage, such as cracks or scratches. If you notice any damage, it may be time to replace the hygrometer.
– Recalibrate as needed: Over time, the accuracy of your analog hygrometer may decrease. If you notice that the readings are not as consistent or reliable as you expect, it may be time to recalibrate the instrument. Refer to the manufacturer’s instructions for specific calibration procedures.

Are analog hygrometers more durable than digital ones?

Due to the fact that analog hygrometers contain fewer electrical components that might go wrong or fail than digital hygrometers, they are typically regarded as being more durable. However, they can still be susceptible to wear and tear, and proper maintenance and care are necessary to ensure their longevity and accuracy.

What are the benefits of using an analog hygrometer over a digital one?

An analog hygrometer has a few advantages over a digital hygrometer. Analog hygrometers are often less expensive than their digital counterparts is one of the main benefits. Additionally, because they don’t need batteries or a power source, they can be used in places without electricity. Additionally, some people prefer the analog hygrometer’s appearance and feel, finding it to be more attractive than digital models.

What is an analog hygrometer and how does it work?

An analog hygrometer is a device used to measure the relative humidity of the air. It works by using a material that changes size in response to changes in humidity. This movement is translated into a reading on a dial or scale, typically through the use of mechanical linkages. An analog hygrometer is an older technology compared to digital hygrometers but is still commonly used due to its ease of use and low cost.

Can an analog hygrometer measure temperature as well as humidity?

Yes, some analog hygrometers do have the capability to measure temperature as well as humidity. These hygrometers typically have two separate scales or dials, one for measuring humidity and one for measuring temperature. However, it’s worth noting that the temperature measurement on an analog hygrometer may not be as accurate as a dedicated thermometer, as the measurement is often a secondary function of the device.

Is an analog hygrometer easy to calibrate?

Although calibrating an analog hygrometer can be simple, it may take some time and effort. In most cases, the procedure involves placing the device in a known relative humidity environment, like a salt solution or a humidity chamber, and adjusting the dial or scale until the reading corresponds to the known humidity level.

However, an analog hygrometer’s ease of calibration can vary greatly depending on the device’s design. Some analog hygrometers may have a mechanism that can be adjusted to make calibration simpler, whereas other models may need to be disassembled in order to make changes. Following the manufacturer’s instructions when calibrating an analog hygrometer is generally a good idea.

What is the lifespan of an analog hygrometer?

The lifespan of an analog hygrometer can vary widely depending on several factors, including the quality of the device and the conditions in which it is used.

In general, a high-quality analog hygrometer can last several years with proper care and maintenance. However, factors such as exposure to extreme temperatures, moisture, or direct sunlight can shorten the lifespan of the device. Similarly, rough handling or accidental damage can also impact the lifespan of an analog hygrometer.

However, the lifespan of an analog hygrometer can also be affected by the materials used in its construction, with some materials being more durable and longer-lasting than others. Taking good care of the device, such as storing it in a safe place when not in use, can help extend its lifespan and ensure that it provides accurate readings over time.

Can an analog hygrometer be used for measuring humidity in a humidor?

Yes, a humidor’s humidity can be measured using an analog hygrometer. Cigars and other items that need a particular relative humidity level are kept in humidors, which are closed containers. It’s crucial to measure the humidity levels inside a humidor to make sure the items are kept there in the best possible conditions.

Due to their simplicity, readability, and ability to provide an accurate indication of relative humidity levels, analog hygrometers are a common choice for measuring humidity in humidors. Certain analog hygrometers are created especially for use in humidors and may have characteristics that make them more suitable for this use, such as small size, strong construction, or a humidity-resistant design.


You should already know what relative humidity is and why it is important. The first step to monitoring and measuring RH is to get a good hygrometer. It doesn’t have to be the most expensive or one of the cheapest. Just make sure the one you get is accurate and reliable.

As mentioned above, there are many options, including analog and digital, indoor and outdoor. As a pick of one of the best analog hygrometer options, we recommend the La Crosse Technology 18” unit, but all the other models mentioned above are very good.

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