RE: [Demo notebook] Reference notebook: corrections and recurring beginner questions · RWI-06876
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December 14, 2019 at 8:24 pm
#53552
BenchNotes 00411
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.