Lange L001

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Calibre Lange L001.1

The calibre Lange L001.1 by A. Lange & Söhne is installed in the A. Lange & Söhne Double Split. It is based on the calibre L951.1.

In addition to the rattrapante mechanism with the characteristic rattrapante pliers, for the first time a sophisticated lever system is used, which transmits the rattrapante function also to the minutes counter-axle. Only partially visible below, the chronograph, the flyback and the minutes counter mechanism are arranged. To minimize mechanical friction at the stopped rattrapante hands but still running chronograph, an insulator mechanism is used, which was newly developed by Lange and registered as patent.

The plates and bridges in untreated German silver are decorated with perlage and Glashütte Stripes, all edges are angled and polished. Likewise, the swan's neck spring and the two classical column shift gears.


Manual winding movement
Shock protection
Escapement: stone lever
Yoke winding system
465 components
Self-made hairspring in the highest quality level
Free running Balance wheel with regulation eccentrics
Four-jewel bearing of the escape wheel
Separatly mountable second wheel and minutes counter wheel bridges both for the chronograph and also for the rattrapante
Stepped snail with synthetic ruby sliding for the precisely jumping minutes counter


Small seconds
Complication: Power reserve indicator, rattrapante also for minutes counter, 4 screwed gold chatons
Double rattrapante and flyback function


13½ lignes
D 30.6 mm, H 9.45 mm
40 jewels
21,600 A/h
Power reserve: 38 hours

Production period:

Since 2004