Retirement of a fork

[Newton Hunt]

Charles, you body temperature is fairly constant but not so your hands because
thermal discrimination is poor.  Calibrate the fork so it is just cool against
the side of your neck, a very sensitive part of your body readily available. 
Set it so it is cook not cold and not warm but cool.  Easier to memorize.

All forks should be check and calibrated every three to four years, they do tend
to drift.  I super source for 440.00000 is an SAT this is carefully calibrated. 
You will need files, a grinder and a steel plate to stabilize the fork
temperature.

Have fun!

		Newton