RE: [Demo notebook] Reference notebook: corrections and recurring beginner questions · RWI-03968
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February 22, 2019 at 3:07 pm
#33671
ReferenceLog 00530
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Case 10 — 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.