RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-19469

[ServiceLedger 03756]

Case 19 — Accuracy expectations: is -8 s/d acceptable on an entry-level automatic?

A correction to a common belief: an automatic doesn't need to match a quartz watch to be healthy. Consistency matters more than the absolute figure. A watch that's reliably -8 every day is easy to live with, since you correct it once a week. One that swings from +10 to -15 is the real concern.