Wet and Dry Hygrometer (Mason’s Type) |

Description

The Wet and Dry Hygrometer (Mason’s Type) is a classic, analog instrument used to measure relative humidity and ambient temperature using the principle of evaporative cooling. It features two spirit thermometers—one dry and one kept moist with a wick—to provide accurate readings when used with a psychrometric chart or humidity calculation table.

Widely used in schools, laboratories, greenhouses, and weather stations, this hygrometer is a trusted tool for understanding atmospheric moisture content and tracking environmental changes.

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Key Features

Dual Thermometer Design
Includes both wet bulb and dry bulb thermometers for precise humidity calculations.

Mason’s Pattern Construction
Traditional design mounted on a sturdy, easy-to-read backing plate—ideal for wall installation.

No Power Required
Fully mechanical and self-contained—no batteries or electricity needed for operation.

Educational & Practical
Excellent for teaching basic meteorology, physics, and environmental science.

Water Reservoir & Wick
Includes water container and absorbent wick to maintain a moist bulb for consistent readings.

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Technical Specifications

Temperature Range: Typically -10°C to +50°C (14°F to 122°F)

Scale Type: Spirit-filled glass thermometers

Humidity Range: Calculated using the wet/dry difference and reference chart

Mounting: Wall-mounted

Material: Plastic or wooden frame with metal brackets (model dependent)

Dimensions: Varies by model (typically 250–300 mm tall)

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Applications

Meteorology & Environmental Monitoring
Used in basic weather stations to monitor humidity and air temperature conditions.

Educational Settings
Ideal for classroom demonstrations in geography, science, and environmental studies.

Greenhouses & Agriculture
Monitors humidity to optimize plant growth and prevent mold or dehydration.

Museums & Archives
Ensures stable humidity levels to protect sensitive items and materials.

HVAC & Air Quality Testing
Can be used as a reference tool for calibration and verification of electronic sensors.

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Why Choose This Mason’s Type Hygrometer?

Time-Tested Accuracy
Based on proven psychrometric principles for dependable humidity assessment.

Durable & Long-Lasting
Simple design with no electronic parts means minimal maintenance and long life.

Great for Learning & Demonstration
Ideal for hands-on understanding of humidity, temperature, and evaporation effects.

Cost-Effective Tool
Affordable and widely used for basic yet effective humidity monitoring.