Wohler RF 220 Hygrotemp Thermo Hygrometer With Probe

Wohler RF 220 Hygrotemp - Relative Humidity and Temperature Meter (Mfg. part no. 6615) is a hand held, battery-driven measuring instrument with probe, batteries and case. The RF 220 Indoor Air Quality Meter calculates the dew point and wet bulb temperature online from the current air humidity and temperature. Your RF 220 is an excellent instrument for quick test of relative humidity within buildings and offices, air conditioning test, as well as building inspection for mold and other humidity related problems.