Timekeeping instruments. Wrist-chronometers with spring balance oscillator1 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.

2 footnote to table h

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Effective implementation

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Provision is made for a maximum of 7 % (V/V) of fatty acid methyl esters (FAME) to be included in automotive diesel fuel

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