Omega Calibre 861A Technical Guide
Technical data and service guide for the Omega Calibre 861A chronograph movement. This technical communication provides complete specifications for this proven chronograph caliber (12''', 27mm diameter, 6.87mm height, 45-hour power reserve, 18 jewels, 3 Hz frequency). Comprehensive coverage includes movement specifications, dismantling and reassembly procedures, cleaning and maintenance protocols, functional checks and control procedures, and detailed adjustment instructions with technical drawings. Essential reference material for watchmakers, service technicians, and anyone servicing or restoring the 861A movement.
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Document Details
- Format
- Pages
- 17
- Size
- 1.1 MB
- Category
- Watchmaking