Numbering of watches and clocks; energy supply, winding mechanism, oscillating system, protective measures and additional functions
€34.30
Horlogerie. Méthode pratique de contrôle de la qualité des montres à ancre empierrée.
€59.00
Cahier des charges pour le contrôle de la qualité des bracelets de montres
€28.00
Boucle de bracelet
€25.00
Terminal markings for electric time service apparatus and systems
Main springs; concepts, requirements, testing
Label for watches and clocks
Label for watches and clocks; example for label-datas
Gold alloy coverings on watch cases; requirements, testing and marking
€48.79
Balance studs for watches and clocks; without head
Balance-screws for watches and clocks
Round glasses for watches - Mineral glasses - Denominations, essential dimensions
Numbering of watches and clocks - Kind of wristlet
Shock protection of watches; definition, requirements, testing
Antimagnetic properties of watches; definition, requirements, testing
