RE: [Demo notebook] Reference notebook: corrections and recurring beginner questions · RWI-07416
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February 8, 2020 at 3:06 am
#57308
QCNotebook 04167
Participant
Case 18 — 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.