wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork

Introduced: January 1980

Last revised: January 2006

Full Title

Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means > wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork

Classification Context

Section:: PHYSICS
Class:: HOROLOGY
Subclass:: ELECTROMECHANICAL CLOCKS OR WATCHES

2 direct subcodes

Child Classifications

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G04C 3/1 driven by electromagnetic means
G04C 3/12 driven by piezoelectric means; driven by magnetostrictive means