Kizen LaserPro LP300 Infrared Thermometer Non-Contact Digital Laser Temperature Gun with LCD Display -58℉～1112℉(-50℃～600℃) Adjustable EmissivityACCURATE Combining the latest temperature sensor technology and advanced Fresnel lens. Improve the accuracy of the thermometer by adjusting the emissivity 0. 1 1. 0 according to the surface material being measured. The distance to spot ratio is 12: 1, which means you can measure the target at a longer distance. For the best accuracy, the thermometer should be 14 in 36 cm away from the object. INSTANT TARGETING Measure temperatures at at range of 58F