Equipped with large dual backlit LCD, Model HHF-308 Anemometer measures temperature and wind speed and then calculates wind chill. Instrument is suited for outdoor environmental studies and helps ensure safety for winter campers and mountaineers. Capable of measuring temperature, humidity, and air speed, Model HHF-309 Anemometer Psychrometer can readout units HVAC technicians require, such as enthalpy, wind chill, and dew point/wet bulb temperatures.