RH300 Digital Psychrometer, Humidity (RH), Air Temperature, Dew Point & Wet Bulb

Amprobe Digital Sling Psychrometer THWD-2

Digital Psychrometer - Compact Handheld Temperature & Humidity Meter with Bat...

Digital Temperature & Humidity Meter with Adjustable LCD - 2-in-1 Psychrometer

Taylor Thermometer 1323, Sling Psychrometer, 5" 20 - 120 degrees F

CPS TM250 Temp Seeker Thermo-Psychrometer w/ Case

General SAM990DW digital thermometer hygrometer and psychrometer

CPS T250 Temp-Seeker Multi-Channel Thermometer, Thermo-Psychrometer