ISO 3159:2009 Preview
Timekeeping instruments -- Wrist-chronometers with spring balance oscillator
This standard was last reviewed and confirmed in 2015. Therefore this version remains current.
ISO 3159:2009 lays down the definition of the term “chronometer”, describing the categories, the test programme and the acceptable minimum requirements for wrist-chronometers.
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A standard is reviewed every 5 years
Revisions / Corrigenda