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ISO 3159:2009

Timekeeping instruments — Wrist-chronometers with spring balance oscillator

Publication date:   Nov 30, 2009

General information

90.60   Close of review   Sep 3, 2026

ISO

ISO/TC 114 Horology

International Standard

39.040.10   Watches

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 3159:1976

NOW

PUBLISHED
ISO 3159:2009
90.60 Close of review
Sep 3, 2026