Three Way Testing Clocks

[elanco]

Can anyone explain how clocks are three way tested and does a T3 clock need doing ? And how's that done ?, thanks

[Guest strapper]

Can anyone explain how clocks are three way tested and does a T3 clock need doing ? And how's that done ?, thanks

 

 

t3 clock does require testing each year but it only has to be run for 24hrs

[Guest bigda]

Can anyone explain how clocks are three way tested and does a T3 clock need doing ? And how's that done ?, thanks

 

 

mostly done by sitting your clock of its side any way and taking a strke from it on differant days from a master timer.

[bibendium]

Is this still in force ? SHU rules?

[Guest strapper]

battery powered clocks need only 1 run over 24hrs.

[elanco]

Thanks for the that