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PCE
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IPC Subgroup
G04F 7/04

using a mechanical oscillator

Introduced: September 1968

Last revised: January 2006

Full Title

Apparatus for measuring unknown time intervals by non-electric means > using a mechanical oscillator

Classification Context

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

2 direct subcodes

Child Classifications

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  • G04F 7/06 running only during the time interval to be measured, e.g. stopwatches
  • G04F 7/08 Watches or clocks with stop devices, e.g. chronograph