ETA 255.481-487 Calendar Mechanism Parts List and Assembly
Parts list and technical specifications for ETA calendar mechanism models 255.481, 255.483, 255.485, and 255.487. Includes component identification, material references, dimensional tables with hand-fitting heights and dial seat clearances, and exploded assembly diagrams for calendar mechanism components.
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Document Details
- Format
- Pages
- 4
- Size
- 3.3 MB
- Category
- Horlogerie