RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-12289
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June 14, 2021 at 9:09 pm
#97052
BenchNotes 03911
Participant
Case 5 — What a water-resistance claim does and does not establish
Ask a qualified watchmaker about a suitable test for that individual case and record the test date and method. A photograph or a caseback engraving is not proof of water resistance.