Felsa 21
Mechanical
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Notes
early fixed, later mobile stud carrier
earlier 8.75" calibre with same designation
differences not known between 21, 81
Dimensions
| Width | 13.5 lignes (30.45 mm) |
|---|---|
| Height | 3.15 mm |
| Stem height | 0.8 mm |
| Hands (H × M × S) | 1 × 0.5 × ? mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | 51 ° |
| Power reserve | 35 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR3460 |
|---|---|
| Height | 1.35 mm |
| Thickness | 0.06 mm |
| Length | 160 mm |
| Barrel diameter | 5 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Felsa |
| Year | — |
| Family | — |
| Clone of | — |
Related calibers
Documents
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Updated 7 days ago · 0 revisions