Form movement Technical term for a movement that is not round but instead shaped in the form of the case. Form movements can be rectangular, tonneau-shaped, or arcade-shaped, for example.

Blued steel, blued screws Steel parts are slowly and cautiously heated (annealed) to about 300°C. This process coats the metal with an extremely thin, shimmering film of cornflower-blue magnetite (Fe3O4).

Chamfering Also: angling, bevelling. The breaking and polishing of sharp edges on bridges and levers. The inclined surface has the same width along its entire circumference or length.

Form movement Technical term for a movement that is not round but instead shaped in the form of the case. Form movements can be rectangular, tonneau-shaped, or arcade-shaped, for example.

German silver Special alloy composed of copper and zinc, with a nickel concentration of about 10%. German silver is stronger than brass and has been traditionally used by Lange for the manufacture of plates and bridges. The addition of nickel minimises the oxidation of German silver and thus eliminates the need to electroplate the alloy - it can remain "untreated".

Glashütte ribbing A linear decoration. It is produced by a rotating grinding wheel that is slightly inclined and moved along the surface of the workpiece in parallel lines.

Gold chaton The gold setting of a bearing jewel - in Lange watches, chatons are often secured to the three-quarter plate with two or three screws.

Three-quarter plate The three-quarter plate was introduced in Glashütte by Adolph Lange in 1864. Since then, it has been a typical feature of Lange watches. It accommodates the counter-bearings of the going train and enhances the stability of the movement.

Balance cock Small metal plate screwed to the visible side of the movement. It carries the balance wheel shaft bearing.

Screw balance A balance wheel that has adjustable screws and tiny washers along its rim.

Semi-oscillation Also: vibration. Half of the path travelled by the balance wheel from end point to end point.

Whiplash precision index adjuster An adjusting device composed of a steel spring in the shape of a swan's neck, a pointer, and a setscrew. The screw is used to adjust the beat, or the timing, of the watch in very small increments.

The CABARET promises a rare and unique sight for those who venture a look backstage: The spectacular | form movement L931.3. Beautifully sculpted, it fills every last corner of the case with exquisite Lange horological artistry. Indeed, it is an absolute rarity in mechanical watchmaking. Like the case, the | three-quarter plate made of untreated | German silver is rectangular. It is decorated with | Glashütte ribbing. The | blued screws and the three screwed | gold chatons are fascinating visual accents. All surfaces of the | form movement are meticulously finished by hand, even those that usually remain concealed to the eye of the beholder. Moreover, the edges are | chamfered and polished. The seconds hand of the manually wound movement stops when the crown is pulled. When fully wound, the watch has a power reserve of 42 hours. The intricate, shock-proofed | screw balance executes 21,600 | semi-oscillations per hour and is adjusted in five | positions. The patented | whiplash precision index adjuster is mounted on a small | balance cock which is engraved by hand, giving every CABARET a one-of-a-kind personality.