Elgin 770
Mechanical
c. 1958
No photos yet
Notes
1958-1963 (730...780)
flat freesprung hairspring
DuraBalance regulator: balance with two regulating weights, shifted simultaneously along the spiral-shaped spokes with a regulator lever
screwed cap-jewel plates for balance; shock protection is realized by the elastical balance spokes
Dimensions
| Width | 19.3 lignes (43.54 mm) |
|---|---|
| Height | 3.7 mm |
| Stem height | 0.9 mm |
| Hands (H × M × S) | 1.14 × 0.66 × 0.2 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 40 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | — |
|---|---|
| Height | — |
| Thickness | — |
| Length | — |
| Barrel diameter | — |