On Oct 14, 12:15*pm, (Dave Martindale) wrote:
allanc writes:
Find a callibrated analog thermometer and compare your thermostat with
that.
Hmmm.
Where do I find a callibrated analog thermometer that I do not have to
'buy' in order ro check my thermostat?

What's wrong with buying a thermometer?

In general, if you want to measure something, you need some sort of
measuring equipment. *You have a few options:
1. Buy one, new or used.
2. Pay someone else who has one to make the measurement.
3. Find someone who has the tool but will make the measurement for free.
4. Do without.

For this particular application, you could probably use an electronic
digital cooking thermometer. *I've seen them for less than $10, and they
read to a fraction of a degreee. *They're probably not *accurate* to a
fraction of a degree, but you can check their calibration yourself and
compensate for any error. *A mixture of ice and water in a vacuum flask,
well stirred, is zero degrees C. *Water boiling well at sea level is 100
degrees C (and if you're not at sea level, there are tables that will
tell you how much the boiling point is reduced by altitude).

* * * * Dave

Do you mean that the digital cooking thermometer has some sort of
built in calibrator
*or* I have to obtain one to calibrate the thermometer?
If the later, then why not just calibrate the thermostat with the
calibrator that I obtain?
Haven't you introduced an extra step?