Infrared Thermometer: What It Is and How to Use One

Illustration of an infrared thermometer with guide text on what it is and how to use it

You point a device at a wall, an outlet, or a supposed cold spot, pull the trigger, and get a temperature reading in less than a second. That’s an infrared thermometer, and it’s become one of the first tools investigators reach for on any case. No contact, no waiting, just a laser dot and a […]