Timekeeping instruments. Wrist-chronometers with spring balance oscillator Ingestion-build-58863 appropriate to any particular type

appropriate to any particular type of sound source

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

Engine-driven main generators – Generators for supplying power to traction motors on the same vehicle or train

BS EN 1542 describes a method for determining the pull-off bond strength of repair products and systems applied to a reference concrete

for the determination of the particle size distribution of aggregates

Timekeeping instruments. Wrist-chronometers with spring balance oscillator Ingestion-build-58863 appropriate to any particular type1 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.