On 23/03/2021 00:52, Dave Plowman (News) wrote:
In article ,
Clive Arthur wrote:
On 22/03/2021 21:38, Harry Bloomfield wrote:
After serious thinking %% wrote :
Nope, not even a frequency counter because they arent that
accurate. You adjust it by seeing if the clock gains or loses.

Actually they do calibrate them, against a very accurate and stable
crystal timebase in watch repairers.

Yebbut a watch runs at a comparatively constant temperature.

Only if you keep it on your wrist at night.


Keeping it on at night might cause it to overheat...

--
Adam