Watches or clocks with stop devices, e.g. chronograph

Introduced: September 1968

Last revised: January 2006

Full Title

Apparatus for measuring unknown time intervals by non-electric means > using a mechanical oscillator > Watches or clocks with stop devices, e.g. chronograph

Classification Context

Section:: PHYSICS
Class:: HOROLOGY
Subclass:: TIME-INTERVAL MEASURING

Related Keywords

CHRONOGRAPHS