FHF 221
Mechanical
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Notes
*)Many different balance staffs are recorded. But mostly the differences are small enough to apply or adapt even a "wrong" staff.
differences not known between 186, 188, 198, 215, 216, 221, 223, probably catalogue designations for different bridge shapes (cf. other family members)
Dimensions
| Width | 23.3 lignes (52.56 mm) |
|---|---|
| Height | 3.8 mm |
| Stem height | 1.2 mm |
| Hands (H × M × S) | 1.4 × 0.7 × 0.21 mm |
Technical data
| Beat rate | 18,000 vph (2.5 Hz) |
|---|---|
| Lift angle | — |
| Power reserve | 45 h |
| Jewels | — |
| Shock protection | — |
| Mobile stud carrier | No |
Complications
| Self winding | No |
|---|---|
| Date | No |
| Day | No |
| Hacking | No |
| Chronograph | No |
Mainspring
| GR code | GR3954 |
|---|---|
| Height | 1.45 mm |
| Thickness | 0.1 mm |
| Length | 320 mm |
| Barrel diameter | 9 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | FHF |
| Year | — |
| Family | — |
| Clone of | — |
Related calibers
Documents
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Updated 7 days ago · 0 revisions