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Discussion Starter · #1 ·
I've seen some discussion about low amplitudes in the 6r15 movement. Is there an actual published spec for the amplitude of the movement, out of which it is supposed to be serviced?
 

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I've never seen such for any movement.

Mine is in the 290's fully wound and dial up. It does go down as you move it though.

I set it 2 days ago and it's +0.5s since then. It's been on my wrist the whole time. I'm good with that.
 

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Discussion Starter · #3 ·
For the ETA movements I found this chart:
7261244798_1abd001ee7_o.jpg
It was previously posted here:
https://www.watchuseek.com/f2/eta-c...24-2-2892-a2-7750-a-513566-2.html#post3759183

(It was not clear to me from that post where this chart came from, however).

I haven't seen something similar for Seiko movements. Wondering if there's something out there?

In particular, one thing that surprised me about this chart is that the "min" for the amplitude range is around 200 degrees, well below the point where people seem to agonize about it for Seiko movements.
 
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