Amplitude.

by Sevesteen, AKA Dave Johnson

 

I don't know how to measure it either, but you can eyeball an approximation that's good enough for our purposes, especially with a two-spoke balance. If the balance is turning 3/4 of a turn, the watch is in very good condition. Half a turn is fair (probably marginal if it's 1/2 on a full wind), and 1/4 turn means something is wrong and it will probably be gaining time briefly before it stops entirely. 3 or 4 spokes work the same way, but the spokes make it harder to judge.



Posted on Sep 28, 2005, 2:26 PM

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