Mido 917P
Mechanical
c. 1952
Self-winding (rotor)
No photos yet
Notes
1952-1960
option: black rhodium plating (charcoal, slight mauve)
option Incastar regulator:
The only large-scale produced regulator featuring a free oscillating hairspring. The end of the spring is fixed between two rollers, adjusting actually its length (Fi. 4, 5)). No isochronism error by the gap between the regulator pins.
Dimensions
| Width | 27.3 lignes (61.58 mm) |
|---|---|
| Height | 5.5 mm |
| Stem height | 0.8 mm |
| Hands (H × M × S) | 1.3 × 0.84 × 0.21 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 41 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | Rotor |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR3498-X |
|---|---|
| Height | 1.35 mm |
| Thickness | 0.09 mm |
| Length | 280 mm |
| Barrel diameter | 8.5 mm |