Watchclock

Mechanical clock used by security guards to mark patrols

A watchclock is a mechanical clock used by security guards as part of their guard tour patrol system which require regular patrols. The most commonly used form was the mechanical clock systems that required a key for manual punching of a number to a strip of paper inside with the time pre-printed on it. Recently, electronic systems have increased in popularity due to their light weight, ease of use, and downloadable logging capabilities.

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