Hey I wasn't try to upset you at all, but just pointing out a possibility.

For the record Accurite does not have a thermometer that is better than +/-2ºF (mine is 1.78ºF low as of this afternoon, I just checked it again it wanders some it is the second worst one I own) and I don't believe there are any IR guns on the market that are better than +/-1.8 ºF either. Just check the specs, accurate means traceable and that requires an individual serial number and records with the manufacturer of the 15 tests that were done on that unit before shipping, they are not cheap mass produced units with resistive probes.

Do not take my word for it check the specs of your unit.
http://www.reptilebasics.com/tempgun_faq