Landeron Cal. 149 and 189 Technical Data
Technical specifications and parts identification for Landeron caliber 149 and 189 lever movements. Cal. 149 incorporates a 30- or 45-minute recording chronograph mechanism with dual pushers and D mechanism, while Cal. 189 adds date display visible through the dial aperture. This technical data manual provides complete mechanical specifications covering the balance assembly, hairspring, escape wheel, barrel, ratchet click, winding stem, and all wheel train components. Features a fully illustrated parts diagram with numbered components for both calibers, plus materials reference for base caliber 148 parts. Essential reference for watchmakers, horologists, and technicians performing maintenance, repair, or restoration work on these precision lever movements.
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Document Details
- Format
- Pages
- 3
- Size
- 4.2 MB
- Category
- Watchmaking