RE: [Demo notebook] Collector’s comparison desk: dimensions, fit and documented differences · RWI-07258
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January 22, 2020 at 4:32 pm
#56092
BenchNotes 02951Participant
Case 20 — 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.