ETA 2892A2 Amplitude
I’m working on a Longines with a 2892A2 movement. All cleaned and oiled, what sort of amplitude should I expect to achieve? I’m hitting 230/240 dial down and 210ish dial up on a full wind. I’m guessing it should be hitting 300?
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This is the reading from my newly serviced ETA 2892-A2. As you can see, lowering the gain setting shows an amplitude of 296 degrees, and looking at the balance in slo-mo this seems to be near the truth.
Setting the gain to its default value the amplitude drops by almost 25 degrees.
Finally, when the gain is set to its maximum the amplitude drops by another almost 40 degrees.
I have also seen the opposite, especially with Seiko movements. That is, to get the correct amplitude
