Historical

ISO 3159:1976

Timekeeping instruments -- Wrist-chronometers with spring balance oscillator


Lays down the definition of the term "chronometer", describing the categoeries, the test programme and the acceptable minimum requirements for wrist-chronometers. Wristwatches using a tuning fork oscillator are subjected to these tests pending the availability of separate standards.


CONTENT PROVIDER
International Organization for Standardization [iso]

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Document History
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