Gruen 502
Mechanical
c. 1936
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Notes
1936-
Breguet hairspring
to wide extent like 355, but due to three available hand post heights applicable in more pedestrian flat and curved models
Conoruma is Gruen's proprietary alloy for hairspring and balance with low temperature dependence
Dimensions
| Width | 17.65 lignes (39.81 mm) |
|---|---|
| Height | 3.95 mm |
| Stem height | — |
| Hands (H × M × S) | 1.22 × 0.66 × 0.16 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 | GR2622 |
|---|---|
| Height | 1.1 mm |
| Thickness | 0.11 mm |
| Length | 240 mm |
| Barrel diameter | 8.5 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Gruen |
| Year | c. 1936 |
| Family | — |
| Clone of | — |
Related calibers
Documents
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Updated 7 days ago · 0 revisions