International Organization for Standardization (ISO)
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ISO 3765:1998
Scope
This International Standard specifies the dimensions for fixing a bracelet to a wristwatch-case with the use of spring bars.
This International Standard is applicable to wristwatch cases of two types and spring bars of three types.
ISO 3765:1998 history
1998ISO 3765:1998 Timekeeping instruments - Wristwatches - Dimensions of bracelet-to-case fastening elements
1976ISO 3765:1976 Timekeeping instruments — Wristwatch cases — Dimensions of fastening elements for bracelets