Amprobe THWD-5 Temperature and Relative Humidity Meter with Wet Bulb and Dew Point Relative humidity (RH) and temperature meter measures temperature, relative humidity (RH), dew point, and wet bulb, and is used for HVAC, indoor air quality, and environmental applications Dual-scale thermometer measures wet- and dry-bulb temperature and dew point in F and C Capacitive humidity sensor ranges from 0 to 100 percent relative humidity (RH) Data hold for recording data, and minimum, maximum, and average temperature readings Flexible probe reaches inside ducts and other hard to reach areas, and tripod mount stabilizes meter for extended readings