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Assembling the Lange 1

The making of the Lange 1 timepiece, is a form of art in itself. Find out for yourself below with the exclusive behind-the-scenes imagery from the brand.
Gurvisha Ahuja

23 Jun 2017

Author

Gurvisha Ahuja
Assembling the Lange 1

The bearing jewels are pressed into the bores by hand. The friction is reduced by adding a droplet of oil in the recesses of the synthetic ruby bearings.

The fusee and chain transmission maintain the accuracy of the watch by making sure that it's constantly driven with the same torque. Watches using this traditional mechanism also carry the “Pour le Mérite” name in additon to the original name.

The fusee and chain transmission maintain the accuracy of the watch by making sure that it's constantly driven with the same torque. Watches using this traditional mechanism also carry the “Pour le Mérite” name in additon to the original name.

Consisting of two separate display elements: the units disc and the tens cross. They revolve one above the other with a clearance of only 0.15 millimetres, which requires extreme dexterity during assembly. To correctly reproduce the date sequence, the disc and the cross must advance at irregular intervals, which is achieved by a controlled programme wheel whose special toothing pattern assures that the date is advanced correctly.

Consisting of two separate display elements: the units disc and the tens cross. They revolve one above the other with a clearance of only 0.15 millimetres, which requires extreme dexterity during assembly. To correctly reproduce the date sequence, the disc and the cross must advance at irregular intervals, which is achieved by a controlled programme wheel whose special toothing pattern assures that the date is advanced correctly.

The classic, hand-engraved balance cock ensures the precise adjustment of the oscillator.

The classic, hand-engraved balance cock ensures the precise adjustment of the oscillator.

A considerable amount of time is spent in the initial assembly.

The movement is taken apart after the first assembly, cleaned and reassembled again to ensure the functionality and visual flawlessness of the movement.

The hands are mounted and all the functions of the watch are checked.

The hands are mounted and all the functions of the watch are checked.

The timepiece undergoes rigorous tests of functional integrity and precision, which may last for several weeks.

The timepiece undergoes rigorous tests of functional integrity and precision, which may last for several weeks.

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