1803-1881

Swiss clockmaker.

1826-27

Invented a pinion-cutting machine.

1833

Foundation of the first Jaeger-LeCoultre Manufacture workshop.

1844

Invented the Millionometer (instrument to measure the micron).

1847

Invention of the swing winder, one of the first reliable systems to wind a watch and set it without having to use a key.

1870

The first mechanically-made repetition calibres and chronograph.

1870

Invented a new winding mechanism.

1870s

Charles Antoine Le Coultre gradually retired. His three sons took over the factory with Edmond Jaeger at the start. His grandson, Jacques-David LeCoultre, formed a partnership with the French watchmaker in 1903.