Bellstone Whirling Sling Psychrometer Hygrometer Thermometer Type Centigrade

Features:

• Sling Psychrometer 0 ~ 50 Celsius. Obtain fast and accurate humidity readings anywhere by comparing the reading of the wet and dry bulb thermometers on the enclosed humidity chart
• Eliminates the hazard of splattering mercury by using a safe and easy to read red liquid
• Obtain fast and accurate humidity reading