ISO 3159:2009 PDF
Timekeeping instruments — Wrist-chronometers with spring balance oscillator
Timekeeping instruments — Wrist-chronometers with spring balance oscillator
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 5
- Дата публикации:
- 30 ноября 2009 г.
- Издание:
- ISO IS 3159 edition 2 version 1
- ICS:
- 39.040.10
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.
Abstract
Overview
ISO 3159:2009 - Timekeeping instruments - Wrist-chronometers with spring balance oscillator defines what constitutes a mechanical wrist chronometer and specifies the test programme and minimum acceptance criteria for certification. Published by ISO/TC 114 (Horology) as the second edition (2009), the standard replaces the 1976 edition and sets objective limits for precision wristwatches regulated by a spring-balance (balance-spring) oscillator. (Wristwatches using a tuning-fork oscillator are currently subjected to these tests pending separate standards.)
Похожие стандарты
Упомянутые в описании и другие стандарты ISO