Document Type and Number:
Japanese Patent JPS6154190
Kind Code:
B2
Abstract:
An electronic measuring apparatus for measuring the rate of an analog-display electronic watch which comprises a quartz oscillator, a frequency divider with an adjustable division factor, a stepping motor and a circuit which, when the stem of the watch is pulled, produces a measuring signal emitted by the stray field of the coil of the stepping motor and comprising trains of pulses whose period and content are respectively representative of the frequency of the oscillator and the division factor. The measuring apparatus comprises a pick-up means for detecting said measuring signal, circuits for computing the rate of the watch and means for displaying said rate.
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Inventors:
FURIDORIN UIGOTO
Application Number:
JP15083379A
Publication Date:
November 21, 1986
Filing Date:
November 22, 1979
Export Citation:
Assignee:
EBAUCHESFABRIK ETA AG
International Classes:
G04D7/12; G04D7/00