If too many of your humidity thermometers have been swung and flung into the corners of your classroom, you’ll appreciate this student-proof stationary design with an unbreakable plastic chart that converts wet and dry bulb temperatures to relative humidity. Enclosed in white plastic case.
Temperature range: 20–120°F (-5°C to +50°C). Size: 12 1/2″L x 3″W x 1 1/2″H.
