RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-07181
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January 13, 2020 at 8:23 am
#55451
ReferenceLog 02310
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Case 1 — 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.