Mason's Hygrometer, 1 to 97 Percent Relative Humidity Range, 0 Degrees to 120 Degrees F Temp.
Range, +/-2 Degrees Temp. Accuracy, 20 to 120 Degrees F Wet Bulb Temperature Range, Fill Red Spirit-Filled, Degree Divisions 2 Degrees F, Height 10 in, Width 4 in, Depth 1 1/4 in Mason Hygrometer,Range 0/120 F.