The Extech 392050 is a Penetration Stem Dial Thermometer that has a temperature range of-58 to 302 Degrees F (-50 to 150°C) and an accuracy of +/-2 Degrees F. Ideal for use in liquids, semi-solids, and solids. It features a 5-Inch stainless steel shaft with a 2-Inch dial, an On-Off switch, and Auto power off after an hour.