Junghans J38a/1
Mechanical
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Notes
open face calibre
simple version of the J38/1 e.g. for the Jota models with steel pallets and only one jewel
mostly imitated balance screws and not gilt base plate
indirect minute, hand friction clutch on barrel (Roskopf type, although with separate minute wheel)
stem mechanism without setting-lever spring between plates
Dimensions
| Width | 41.25 lignes (93.05 mm) |
|---|---|
| Height | 5.4 mm |
| Stem height | 0.6 mm |
| Hands (H × M × S) | 1.82 × 1.16 × 0.22 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 | — |
|---|---|
| Height | 21 mm |
| Thickness | 0.2 mm |
| Length | — |
| Barrel diameter | 2.1 mm |
Overview
| Type | Mechanical |
|---|---|
| Manufacturer | Junghans |
| Year | — |
| Family | — |
| Clone of | — |
Documents
None
Updated 7 days ago · 0 revisions