I have a few laser temp guns but they only measure the surface temps of
solid objects.
To adjust and monitor basking temps, I use a digital thermometer with a
wired probe, which I put in the basking location right where my cham will be.
This way, I am measuring the whole area and not just one tiny surface spot.
You want to get a good reading of the surrounding air where the basking spot
will be.
A laser temp gun cant measure air temp.