By the way I'm using a infrared thermometer gun I bought on Amazon for $16.19! It's marked down like 78%, it's normally $71.99. This one is just basic with all the main stuff you'll ever need. Plus it has like 100 5 star reviews on it so I knew it was a good deal reviewing all the comments people wrote about it. If you're interested in buying it check it out. It has a laser sight you can turn on for more precise readings, blue light that lights up the led screen, auto shut off/low batter indicator.

Amazon.com: HDE Temperature Gun Infrared Thermometer w/ Laser Sight: Home Improvement