|Diameter:||32.45 mm (14.5 ligne)|
|Complications:||2-Button, 7-Column Chronograph, Chronograph, Column Wheel Chronograph|
|Hands:||12 Hour Chronograph Hand at 6:00, 30 Minute Chronograph Hand at 3:00, Central 60 Second Chronograph Hand, Central Hour Hand, Central Minute Hand, Small Seconds Hand at 9:00|
|Distinguishing Technical Characteristics|
Clockwise Balance Cock
Cal. 42 was a column wheel chronograph movement produced by Landeron (Charles Hahn & Cie.) for Breitling in the 1940s. It added an hour counter to the existing Cal. 39, which was also produced for Breitling, and was part of a family of 14 ligne chronograph movements.Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.