RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-00405
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February 28, 2018 at 11:37 am
#6978
QCNotebook 03837
Participant
Case 35 — Strap dimensions: lug width, taper, thickness and spring bar diameter explained
Lug width is the essential one: the inside distance between the lugs where the strap fits. Measure with a ruler marked in millimetres, ideally reading it under magnification. Most watches use even numbers (18, 20, 22mm), but odd widths exist. If you measure 19 or 21, measure again and check the manufacturer spec before ordering.