RE: [Demo notebook] Reference notebook: corrections and recurring beginner questions · RWI-05548
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August 1, 2019 at 9:16 am
#45154
Participant
Case 2 — Maintenance question: how do I tell if an automatic actually needs service?
Clarifying question first: do you have a baseline? If you've never recorded the watch's rate or power reserve, 'drifting' is hard to judge. Start a simple log now with daily offset against a reference time for a week, and the hours it runs from full wind. Once you have that, later changes mean something.