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Gruen 306
Ligne: 10.5'''
Jewels: 15/17
Power Reserve: 40 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1940
Diameter: 23.7 mm
Height: 4.2 mm
Hands: 1.40 x 0.70 mm
The Gruen 306 watch movement is a mechanical movement with various bridge shapes, including the 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, and 112. This movement features manual winding and a sub-second function. It was commonly used around the 1940s.
The Gruen 306 features the following functions:
- Manual Winding
- Sub Second
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.70 x 0.100 x 290 x 9.0 mm | Manual | Buy mainspring | |
| 1.30 x 0.110 x 400 x 11.0 mm | GR3288 | 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 |
|---|
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