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1113 - Cours d'horlogerie

Technicum de La Chaux-de-Fonds, Ecole d'horlogerie. IIème cahier - Description des appareils à mesurer le temps. 3ème édition, + cahier de 15 pages sur le rouage et documents manuscrits sur le rouage et profil d'engrenage et développante de cercle.

22 pages

Edition : 1912