Billeter, Carl,
Le réglage de Précision : Cours pratique et éléments théoriques.
- 2me édition. [2nd edition].
- XXVIII, 287 pages : illustrations ; 20 cm.
Advertising matter, pp.265-287.
Clocks and watches.
Clocks and watches--Repairing.
Clocks and watches.
Clocks and watches--Repairing.
Adjust Switzerland Regulate textbook Watch (general)