Accurites are not very accurate in my experience of the three I had the best was 2ºF high. I suggest comparing three or more thermometers in the same location (5+ is better) and any that read off of the majority toss out. Especially as the accurites have errors of 2ºC +/- there are far cheaper units with higher accuracy easily available. (+/-2ºF or 1ºC) Heck there is a small lab selling calibrated tracked thermometers for the same price as an accurite.