List of products by brand Jean Lassale

Jean Lassale was a Swiss watch company that designed the Caliber 1200, featuring the thinnest mechanical watch movement: 1.2mm. In the 1970s, Pierre Mathys, master watchmaker in La Chaux-de-Fonds, designed and built the prototype of a revolutionary watch caliber, with the aim of making the thinnest watch in the world. To achieve this feat, Mathys based his design on the work of Robert Annen, who had previously had the idea of ​​using ball bearings in small-scale watchmaking. Mathys decided to eliminate the bridges and the counter-pivot, and instead use ball bearings for the axle.

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