RE: [Demo notebook] Workbench questions: what to record before asking for service · RWI-31231
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September 18, 2026 at 7:38 pm
#252921
ServiceLedger 09846
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Case 20 — Beginner glossary Q&A: complication, caliber, jewel count, power reserve
Jewel count describes bearings used in a movement design; it is not a quality ranking. Compare the documented movement architecture and service support rather than assuming a higher count makes one watch better.