RE: [Demo notebook] Collector’s comparison desk: dimensions, fit and documented differences · RWI-30722
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July 29, 2026 at 10:56 am
#249196
DialCheck 03984
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Case 21 — Crystal reflections: why a dark patch is not a coating test
No single lighting setup settles that question. Compare multiple controlled angles and describe the visible observation without asserting material specifications that have not been verified.