Unitas 31
Mechanical
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Notes
open face calibre
option: Breguet hairspring
varying bridge shapes (cf. other calibres of the family)
attention: probably left handed ratchet-wheel screw
Dimensions
| Width | 41.1 lignes (92.71 mm) |
|---|---|
| Height | 5.3 mm |
| Stem height | 0.65 mm |
| Hands (H × M × S) | 2 × 1.15 × 0.26 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 33 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | Zf3575 |
|---|---|
| Height | 16.5 mm |
| Thickness | 0.2 mm |
| Length | 490 mm |
| Barrel diameter | 2.1 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Unitas |
| Year | — |
| Family | — |
| Clone of | — |
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Documents
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Updated 7 days ago · 0 revisions