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Brand: | Universal | 
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| Family: | |||
| Height: | 5.50 mm | ||
| Jewels: | 17 | ||
| Reserve: | 36 hours | ||
| Frequency: | 18000 A/h | ||
| Winding: | Hand winding | ||
| Diameter: | 27.80 mm (12, 12.25 ligne) | ||
| Complications: | 2-Button, 8-Column Chronograph, Chronograph, Column Wheel Chronograph | ||
| Hands: | 30 Minute Chronograph Hand at 3:00, 45 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Small Seconds Hand at 9:00 | ||
| Production: 1932 – 1970 | |||||||||||
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| 1910s | 1920s | 1930s | 1940s | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
Universal Cal. 281 is a hand-winding 12.25 ligne chronograph movement.
Many of the Universal Cal. 281 family were produced in different versions: The basic “Uni-Compax” movement features only a 30 or 45 minute chronograph counter and small seconds with two subdials, the “Compax” or “Bi-Compax” version adds a 12 hour counter with three subdials, and the “Tri-Compax” includes a full calendar and moon phase with four subdials. The “Compax” naming scheme is often confused today, with two-subdial versions often called “bi-compax” and three-subdial configurations “tri-compax” even though this is incorrect.
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.