RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-00645
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March 24, 2018 at 1:08 am
#9475
DialCheck 06334
Participant
Case 21 — 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.