Timekeeping instruments. Wrist-chronometers with spring balance oscillator Ingestion-build-58863 Who is BS 8201 -

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lighting and acoustics and specifies how to establish these parameters for building system design and energy performance calculations

Timekeeping instruments. Wrist-chronometers with spring balance oscillator Ingestion-build-58863 Who is BS 8201 -1 Scope This International Standard lays down the definition of the term chronometer, describing the categories, the test programme and the acceptable minimum requirements for wrist chronometers. NOTE Wristwatches using a tuning fork oscillator are subjected to these tests pending the availability of separate standards.