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Longines Calibre 30CH Movement Specifications, Beat Rate & Dimensions |
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Technical Caliber Datasheet
| Manufacturer | Longines |
| Caliber Reference | Calibre 30CH |
| Movement Type | Flyback Chronograph |
| Diameter (Lignes) | 13''' |
| Diameter (mm) | 29.8 |
| Movement Thickness | 5.65 |
| Jewel Count | 18 Jewels |
| Vibrations Per Hour | 18,000 BPH (2.5 Hz) |
| Balance Lift Angle | 50° |
| Power Reserve | 44 hours |
| Escapement Type | Column wheel with shock |
| Shock Protection System | Incabloc |
| Production Era | 1947-1968 |
| Wristwatch Conversion Rating | Post-war high precision flyback |
Historical & Mechanical Notes
The Longines Calibre 30CH is revered among horologists for its mechanical architecture and precision timing characteristics. Operating with an oscillation rate of 18,000 BPH and a 50° lift angle, this movement exemplifies vintage fine watchmaking standards.
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