General Tools & Instruments’ 12:1 IRT657 wide-range infrared thermometer has a broad measurement range of -40° to 1,076°F (-40° to 580°C). This precision point-and-shoot, gun-style infrared thermometer accurately and easily measures surface temperatures from a safe distance. The IRT657 has a rugged, ergonomic design with a 1.6 in. diagonal backlit LCD and is powered by a single 9-volt battery (included)