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Unitas 261
Ligne: 12'''
Jewels: 0/1
Power Reserve: 37 hrs
Frequency: 18000 vph
Type: Manual Wind
Period used: ~1970
Diameter: 29.33 mm
Height: 4.5 mm
Hands: 1.90 x 1.10 x 0.26 mm
The Unitas 261 is a mechanical watch movement that features a pin-lever escapement and a flying barrel. It incorporates an indirect minute hand friction clutch on the barrel, allowing for manual winding. An interesting design element is the use of a single part that replaces the setting-lever spring, yoke, and yoke spring, simplifying the overall mechanism. This movement includes additional functions such as sweep seconds and a date function, which is set by changing the time between 21:30 and 24:00. The Unitas 261 movement was introduced around 1970.
The Unitas 261 features the following functions:
- Date: set by changing 21:30-24h
- Manual Winding
- Pin lever
- Sweep second
Balance Staff Listing
| Ronda Reference # | Shock System | Buy |
|---|
Mainspring Listing
| Dimensions | GR Reference # | End Type | Buy |
|---|---|---|---|
| 1.40 x 0.110 x 340 x 10.0 mm | GR3700 | 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) |
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Documents
Parts Listing
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