RICHARD LANGE - BORN FROM THE SPIRIT OF DISCOVERY.

The design of the manually wound L041.2 movement is focused on attaining the ultimate in reliability and rate accuracy. The large balance wheel with eccentric poising weights beats at a frequency of 21,600 semi-oscillations per hour. Its balance spring was developed by Lange's master watchmakers and is manufactured in-house. It is attached with a patent-pending clamp that, unlike other constructions, does not deform the spring in the stud but instead merely secures it to simplify any future adjustments that may be needed. The balance wheel and the balance spring were harmonised with each other across the numerous test series of a sophisticated research programme.

A MILESTONE EN ROUTE TO PRECISION.

The new balance spring reflects what is probably Richard Lange's greatest accomplishment. In 1930, he had filed the application for Patent No. 529945 "Metal alloy for watch springs". In his invention dossier, he described that the admixture of beryllium offsets the disadvantages of conventional springs, namely inadequate elasticity and insufficient hardness.

GOING TRAINS DEVISED BY MASTERMINDS.

The spring barrel stopwork is another design measure that increases the rate accuracy of this watch. Thanks to this device, the going train of the RICHARD LANGE is continuously powered at nearly constant torque over a period of 38 hours. The wheel that carries the seconds hand is driven by a separate train that runs under its own meticulously decorated bridge.