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Altus 10.5" Movement Specifications, Beat Rate & Dimensions |
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Technical Caliber Datasheet
| Manufacturer | Altus |
| Caliber Reference | Altus 10.5" |
| Movement Type | Manual |
| Diameter (Lignes) | — |
| Diameter (mm) | 23.69 mm |
| Height / Thickness | 3.6 mm |
| Jewel Count | 15 Jewels |
| Beat Rate / Frequency | 18,000 BPH |
| Lift Angle | 51° |
| Power Reserve | 38 hours |
| Escapement | Swiss Lever |
| Production Period | 1925 |
Historical & Mechanical Notes
The Altus 10.5" is a celebrated example of vintage precision engineering. Featuring 15 jewels and operating at 18,000 BPH, surviving examples are prized by collectors and restorers. For further technical reference on vintage watch movements, consult the Rolex Forums technical reference.
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