Extech Instruments RH25 Heat Index Psychrometer

Heat Index measures how hot it feels when Humidity is combined with temperature, air movement, and radiant heat Wet Bulb Globe Temperature (WBGT) considers the effects of temperature, humidity, and direct or radiant sunlight Built-in multiparameter sensor measures Heat Index, WGBT, Humidity, Ambient Temperature, Temperature, Dew Point and Wet Bulb Package Dimensions: 20.32 L x 2.286 H x 12.7 W (centimeters)