Checking timed patrols, e.g. of watchman

Introduced: September 1968

Last revised: January 2006

Full Title

Registering, indicating, or recording the time of events or elapsed time, e.g. time-recorders for work people > Checking timed patrols, e.g. of watchman

Classification Context

Section:: PHYSICS
Class:: CHECKING-DEVICES
Subclass:: TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE

Related Keywords

checking timed patrols of WATCHMEN