The Extech 392052 is a Flat Surface Stem Dial Thermometer with a temperature range of -58 to 572 Degrees F (-50 to 300°C) and an accuracy of +/-2 Degrees F. Ideal for measuring high temperatures on motors and other flat surfaces including grilles. Thermometer features a 5-Inch stainless steel shaft with a 2-Inch dial, an On/Off switch, and Auto power off after an hour.