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Hebdomas Hebdomas 8 Days Movement Specifications, Beat Rate & Dimensions |
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Technical Caliber Datasheet
| Manufacturer | Hebdomas |
| Caliber Reference | Hebdomas 8 Days |
| Type | Open Escapement |
| Diameter (Lignes) | 19''' |
| Jewel Count | 15 Jewels |
| Oscillation Frequency | 18,000 BPH (2.5 Hz) |
| Lift Angle | 52° |
| Era | 1890-1920 |
| Power Reserve | 37 hours |
| Escapement Type | Straight line lever escapement |
| Balance Wheel Construction | Bimetallic compensation balance with gold screws |
| Hairspring Specification | Breguet overcoil hairspring |
| Shock Protection System | Rigid balance jewels |
Historical & Mechanical Notes
The Hebdomas Hebdomas 8 Days is revered among horologists for its mechanical architecture and precision timing characteristics. Operating with an oscillation rate of 18,000 BPH and a 51° lift angle, this movement exemplifies vintage fine watchmaking standards.
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