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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 |
| Movement Type | Open Escapement |
| Diameter (Lignes) | 19''' |
| Diameter (mm) | 43.0 |
| Movement Thickness | 7.2 |
| Jewel Count | 15 Jewels |
| Vibrations Per Hour | 18,000 BPH (2.5 Hz) |
| Balance Lift Angle | 52° |
| Power Reserve | 192 hours (8 Days) |
| Escapement Type | Exposed dial balance lever |
| Shock Protection System | Solid jewel cups |
| Production Era | 1890-1920 |
| Wristwatch Conversion Rating | Unique exposed balance wrist conversion |
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 52° lift angle, this movement exemplifies vintage fine watchmaking standards.
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