[bigben2k]

This begs the question; how does one run a calibration, which we've been over several times.

Then we have 3, 4, 5 and 6 point calibrations, and how it's applied.

You have a Quartz reference, most DIY'ers will not.


As a DIY tester, I'll have access to the following 'real' temps:
-freezing (0.01 deg C)
-boiling
-a mercury thermometer, ranged from 19 deg C to 27 deg C, in 0.1 deg C increments (NIST traceable, but I do not hold the cert, I assume good to 0.1 deg C, until it is abused).

(may be able to get various freezing/boiling of other substances)

I believe I'll be able to run a limited 3 point cal, but over a range that is far wider than interesting/relevant.

Or I could run a 3+ point cal using only the mercury thermometer, over its (narrow and interested) range, but I highly suspect it'll be useless (too low res).