HYGROMETER MASONS R/S PLASTIC W/CALC -5/50 DEG C

• GE2795-01

Wet/Dry thermometer
An instrument used to measure the relative humidity of the atmosphere. It consists of a thermometer with a bulb that is wet or moist and one that is kept dry. The relative humidity is calculated from the difference in readings of the thermometers when water evaporates from the wet bulb, decreasing its temperature.