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Publication of FR862009ApublicationCriticalpatent/FR862009A/fr
G04D—APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES
G04D7/00—Measuring, counting, calibrating, testing or regulating apparatus
G04D7/12—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard
G04D7/1257—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard wherein further adjustment devices are present
G04D7/1271—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard wherein further adjustment devices are present for the control mechanism only (from outside the clockwork)
G04D7/1285—Timing devices for clocks or watches for comparing the rate of the oscillating member with a standard wherein further adjustment devices are present for the control mechanism only (from outside the clockwork) whereby the adjustment device works on the mainspring
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General Physics & Mathematics
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FR862009D1939-08-121939-08-12Procédé et dispositifs pour le réglage des balanciers circulaires et spiraux
ExpiredFR862009A
(fr)