The 42545-NIST is a High Temperature IR Thermometer which measures up to 1832 degrees F (-50 to 1000°C) with 50 to 1 distance to target ratio and laser pointer that identifies target area. Highest 50 to 1 distance to target ratio measures smaller surface areas at greater distances for safe and accurate readings. Large backlit LCD display. Adjustable emissivity. Complete with 9-Volt battery and carrying case. Includes certificate traceable to NIST.