To get heat readings from your target object, you have to know how to use an infrared thermometer with a laser pointer: -Adjust the switch to your desired measurement unit. -Turn on the temperature laser gun using its power button, if any. -You can depress the trigger to obtain hidden temperature units. -Aim the laser point towards the object from which you want to collect temperature readings. -Stand as near as possible to the target object for pinpoint readings, unless you feel that it’s too dangerous for your health to get closer. -Pull the trigger to get temperature readings from the infrared Thermometer’s digital display.