IR guns are good for doing comparisons and other non-critical temp things.
I would never trust, even my most expensive gun, to give me an accurate
egg temp. The probe type on a multimeter are ok but I still question the accuracy.
With an IR gun just the egg colors affect the temp reading. They are still a
good tool to have, even a cheap one. I use my cheap one a lot more than
my expensive Fluke. The cheapy works well, is smaller, and if I break it I
won't cry, well maybe a little.
Anyone have a source for good old fashioned mercury thermometers????
One last thought. Some thermometers, like oral ones, are contact types.
They do not give an accurate air temp. They must be is some type of liquid,
like water or a mouth, to give a true reading. I use a digital oral in my
wiggler and just spot check from time to time.