An infrared thermometer is a thermometer which infers temperature from a portion of the thermal radiation sometimes called black-body radiation emitted by the object being measured. They are sometimes called laser thermometers as a laser is used to help aim the thermometer, or non-contact thermometers or temperature guns, to describe the device's ability to measure temperature from a distance. By knowing the amount of infrared energy emitted by the object and its emissivity, the object's temperature can often be determined within a certain range of its actual temperature. Infrared thermometers are a subset of devices known as thermal radiation thermometers.

Why use an infrared thermometer?
One of the benefits of an infrared thermometer is it can be used at a distance, making it useful for a variety of industrial applications.

How do you use an infrared thermometer?
Infrared thermometers are simple to use. To take a temperature, simply point it at an object and pull the trigger button. The laser light will travel to the object you are taking the temperature of and render a reading in about one second.