Gruen Watch Calibers Technical Data Sheet
Technical data sheet for Gruen watch calibers, presenting specifications for 23 distinct movement types. The reference document covers caliber designations including the 215R, 255R, 275R, 278R, 365SS, 415R, 460, 480, 510R, 510CD, 550SS, 560RSS, 710RSS, 730SS, 225R, 244F, 248R, 258R, 375SS, 397CA, 512, 711SS, and 731SS—each with base caliber information, movement size, jewel count, escape wheel specifications, hairspring data, balance wheel dimensions, and related technical parameters. Published by Gruen Watch Mfg. Co. SA in Bienne, this single-page reference provides essential shop documentation for technicians and watchmakers performing maintenance, repair, and parts identification on Gruen movements.
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Document Details
- Format
- Pages
- 1
- Size
- 686.1 KB
- Category
- Watchmaking