====== Universal 285 ======
**Calibre 285** is a [[chronograph]] [[watch movement]] from [[Universal Genève]].

Likely conceived by [[Martel]] and shared with [[Zenith]], Calibre 285 was introduced around [[1942]] and produced for half a century after. Calibre 285 and its relatives remained competitive all that time thanks to solid engineering, including an 8-column [[pillar wheel]] design, two button operation, and [[compax]] design.

Calibre 285 used Martel's variable-diameter plate technology By interchanging cam plates, the movement could be produced as 14, 15, 15.25, or 15.75 ligne sizes (Calibres 285, 287, 288, and 292, respectively). The later Calibre 385 and Calibre 387 were variations on Cal. 285 and 287 with [[flat hairspring]]s instead of [[Breguet hairspring]]s.

===== Variants =====
  *Breguet hairspring
    *Universal Calibre 285/Zenith Calibre 146 - 14 ligne
    *Universal Calibre 287/Zenith Calibre 156 - 15 ligne
    *Universal Calibre 288 - 15.25 ligne
    *Universal Calibre 292/Zenith Calibre 166 - 15.75 ligne
  *Flat hairspring
    *Universal Calibre 385
    *Universal Calibre 387

===== See also =====
  *[[http://forums.watchuseek.com/f27/short-history-martel-watch-co-zenith-chronographs-660565.html|A Short History of Martel Watch Co and Zenith Chronographs]]


<WRAP ud ud_mov>

**Description:**
  * [[Hand winding]]
  * [[Column wheel]] [[chronograph]]

**Functions:**
  * Hours, minutes
  * [[Small seconds]]
  * 60 second, 30/45 minute counters

**Data:**
  * 14, 15, 15.25, or 15.75 [[ligne]]s
  * D 31.7, 33.2, 34.2, or 35.2 mm, H 6.05 mm
  * 17 [[jewels]]
  * 18000 A/h

**Production period:**
  * [[1942]]-
</WRAP>

{{tag>Movements Chronograph_movements Manual_winding_movements Universal_calibres Column_wheel_chronograph_movements}}