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Gruen 381
Ligne: 13.75'''
Jewels: 17
Power Reserve: 43 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1955
Diameter: 31.5 mm
Height: 6.0 mm
Hands: 1.85 x 1.30 x 0.27 / 0.27 x 0.20 mm
Base: Landeron 78
The Gruen 381 is a manual-wind chronograph movement with a duration of 60 seconds and the ability to measure up to 30 minutes. Its switching mechanism operates by a cam. This movement also features a sub-second function. It was commonly used in watches during the approximate time period of 1955.
The Gruen 381 features the following functions:
- Manual-wind chronograph, 60s, 30min, cam switched
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.45 x 0.130 x 380 x 11.5 mm | GR4011 | Manual | Buy mainspring |
| 1.45 x 0.130 x 360 x 11.5 mm | Manual | Buy mainspring |
Incabloc Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
KIF Part Listing
| Block # (Top/Bottom) | Cap Jewel # (Top/Bottom) | Spring # (Top/Bottom) |
|---|
Documents
Parts Listing
| Part Description | Reference # | Alternate | Buy |
|---|---|---|---|
| PALLET ARBOR | 72S/105P | 714/LAN 72 | Buy part |
| ROLLER 255X100X48 | 82S/118R | Buy part | |
| STAFF | 100/1167 | Buy part | |
| STAFF, INCA | 100/1169 | Buy part | |
| STEM, TAP 6 | 200/1083F | Buy part |
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