Oh, God, Johnny, don't point that gun at me (c) New Order
Anyways, lowest on camels
Reddit says:
When measuring the temperature you can get different readings depending on:
"angle of attack" - location you're aiming the temp. gun from
"distance" - are you measuring the temp from a consistent distance?
"emissivity" - to properly measure the surface temperature the gun needs to be calibrated to the material being measured
I like the EtekCity 1022D because the two beams allow you to fine tune the convergence point so that you can maintain a similar "angle of attack" and "distance" each measure. Additionally the EtekCity 1022D does allow for you to adjust the emissivity settings.
$15 on Aliexpress, careful with that axe Eugene.