La montre normale : essai d'unification /
Avant-propos de H. Morel-Fourrier.
- 64 pages : illustrations (4 folded) ; 20 cm
- Bibliothèque horlogère .
Wrist watches--Design and construction. Wrist watches--Standardization. Clocks and watches--Standardization. Clocks and watches--Design and construction.
Making Industry Switzerland Normal standard watch Watch (general)