Sometimes it's best to keep things simple, and this 5" Round Chrome Sauna Thermometer / Hygrometer is easy to read. Suitable for a home setting or commercial sauna, the black dials on the large white faceplate are legible from a distance of up to 10 feet away. The thermometer displays the temperature in both degrees Fahrenheit and Celsius in ranges from room temperature up to 240°F (120°C). The hygrometer component of the instrument measures the relative humidly from 0% to 70%. Some people prefer a dry sauna (5-10% RH) while others prefer to throw water on the rocks to create some refreshing steam (raising RH to approximately 20-25%). Effortlessly hang this combination sauna thermometer/hygrometer with a single screw using the hole on the back place.