Review on MASTERCOOL 52224 Infrared Thermometer Laser by Nicole Garcia

I've had this for several years and it's consistently 5F below actual temp. I know this is inaccurate because I've used some other temperature measurement tools like FLIR, the Rx medical surface temperature controller, and several off-the-shelf thermostats. That's fine if you know where the temperature offset is, but since you can't calibrate it, it means you have to add or subtract an error every time. it is used.