Extech RH390 Precision Hygro Thermometer Psychrometer

Extech Instruments Psychrometer RH300

Extech RH390 Precision Psychrometer (Temp, RH, Dew Point, Wet Bulb - Deg C & F)

Extech RH490 Precision Hygro-Thermometer w/ GPP Display of Humidity/Temperature

Extech RH390 Precision Psychrometer

Extech Precision Digital Psychrometer RH390 Temperature & Humidity

Extech IR Thermometer & Humidity Meter RH101 MISSING PROBE

New Handheld Digital Psychrometer - Orange