BOBTHEukBREWER
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- Jun 22, 2008
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Is it possible to calibrate a thermometer without direct comparison to a master thermometer? I was wondering if there was a wax or a chemical misture with a melting point of 66 deg C, so plotting a cooling curve from 80 to 50 would show the points of inflection (if that is what they are called). My thermometer WAS calibrated to national standards 5 years ago and was reading 67 against a true 66, and I have no idea if this is still the case. I doubt that melting ice or boiling water would help, as those fixed points are well away from 66 deg C.