HM-100-Micro-Humidity-Temperature-Meter-37438-RIDGID-37438-p-The-Ridgid-HM-100-Micro-Humidity-&-Temperature-Meter-is-a-professional-&-easy-to-use-device-for-accurately-measuring-air-humidity-&-temperature-Both-measured-values-RH-&-deg-C-or-deg-F-are-instantly-&-simultaneously-displayed-on-the-dual-backlit-LCD-p-p-The-HM-100-also-automatically-calculates-the-Dew-Point-&-Wet-Bulb-temperature-while-its-Capacitance-Sensor-easily-withstands-the-effects-of-condensation-an