Förster 420
Mechanical
c. 1972
Self-winding (rotor)
No photos yet
Notes
1972-
indirectly driven minute allows a big balance and low profile
barrel with jewel bearings
option: raised hands and spacer to get the height of the Förster 422 (Fig.4), then casing compatible with ETA 2670
Dimensions
| Width | 17.2 lignes (38.8 mm) |
|---|---|
| Height | 4.6 mm |
| Stem height | 0.9 mm |
| Hands (H × M × S) | 1.2 × 0.7 × 0.2 mm |
Technical data
| Beat rate | 21,600 vph (3 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 37 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | 6 mm |
| Thickness | 0.08 mm |
| Length | — |
| Barrel diameter | 1.15 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Förster |
| Year | c. 1972 |
| Family | — |
| Clone of | — |
Related calibers
Documents
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Updated 7 days ago · 0 revisions