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FHF 70 old
Basic Information
| Name | FHF 70 old |
|---|---|
| Manufacturer | Fabrique d’Horlogerie de Fontainemelon |
| Launch Year | 1940 |
| Is COSC certified | No |
Timegrapher
Beat rate
18,000 bph
Frequency
2.5 Hz
Reference: healthy amplitude ≈ 270–315° fully wound (>200° at 24 h); beat error ideally < 0.5 ms.
Technical Details
| Lignes Dimensions | 10.5 ‴ |
|---|---|
| Dimensions | 23.7 mm |
| Height | 4.2 mm |
| Further Measures | Mounting Diameter (Dm): 23.3mm |
| Power Reserve | 40 hours |
| Frequency | 18,000 vph |
| Jewels | 17 |
Complications and Specifications
| Shape | Round |
|---|---|
| Complications |
|
| Regulator Type | Pinned Regulator (or Index Regulator) |
| Movement Type | Manual |
| Escapement Type | Swiss Lever |
| Control Type | Balance Wheel |
| Winding Type | Stem Winding (Crown) |
| Setting Type | Stem Set (Crown Pull) |
Additional Information
| Hand Sizes | 1.40 x 0.70mm |
|---|---|
| Hand Count | 3 |
| Country Of Manufacture | Switzerland |
| Notes | Remarks: different bridge shapes (cf. FHF 30) same designation for a newer calibre differences not known between 1, 10.5" , 2, 10.5" , 30, 31, 50, 65 old, 66 old, 70 old, 71 old, 73 old, 76 old, 78, 90, 91, 107, 108, 110, 112 Other data: balance staff: U1317 stem: W1110 mainspring / battery: Zf1389, 1.70 x 9.0 x 0.10 x 290mm Ranfft mentioned about this caliber: There are variants with this quantity of jewels 15, 17 |
| Signature | ca. 1940: Swiss Made, 15 Jewels (FHF 30) |
Compatible Parts
No parts linked yet for this caliber.
Metadata
| Created At | Sep 15, 2023 |
|---|---|
| Updated At | Apr 23, 2025, 11:32:42 PM |
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