I am starting to have the need to make reasonably accurate temperature 
readings, most typically of ambient air...   and typically in the range 
of -40C to +60C, but of course larger is better.     I'd like to have at 
least 0.05*C accuracy, but again, of course finer is better.

I have a high-resolution voltmeter I send off to get calibrated every 
year or so to be able to do similar voltage measurements, along with a 
voltage reference to verify it's calibration.    I'm looking for 
something similar for temperature (the meter, not the reference, since 
they are really expensive (and no, boiling/frozen water isn't an 
accurate enough temperature source, especially on the boiling side)).

-forrest


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