The most accurate way to measure Relative Humidity (RH%)!
Two 5½" red spirit filled thermometers are attached to a metal back for whirling. To obtain a RH%, simply wet the wick of the wet bulb thermometer, whirl the psychrometer, and view both thermometer readings. Then, using the chart provided, determine the RH% (the optional slide rule makes this easier).
- Handle folds out of way when not in use
- Supplied with humidity table, wicks & hard carrying case
- Range 20°F to 110°F
- Accuracy: ±1% scale
- Resolution: 1°F
- Length: Two 5½" thermometers
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EASY TO USE AT A GREAT PRICE. THAY ARE HARD TO FIND, THESE PEOPLE SEEM TO HAVE EVERY THING I NEED.