|Diameter:||31 mm (13.75 ligne)|
|Complications:||2-Button, Cam Switching Chronograph, Chronograph|
|Hands:||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. 248 is one of a family of cam switching chronograph movements produced by Landeron. It is closely related to the preceding Cal. 148.
Cal. 248 was widely used in the 1960s, including by Heuer-Leonidas, Nevada, and Ardath.
Landeron Calibre 48 Chronograph Operation
Unlike many 2-button chronograph movements, the stop function shares the reset button rather than the start button. Therefore, on many Cal. 48 family movements from Landeron, the buttons function as follows:
- 2:00 – Start
- 4:00 – Stop/Reset