Time clock
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A time clock, sometimes known as a clock card machine, punch clock, or time recorder, is a device that records start and end times for hourly employees at a place of business.
British munitions workers clocking in at the start of a shift, 1940
Electronic time clock
Early time clock, made by National Time Recorder Co. Ltd. of Blackfriars, London at Wookey Hole Caves museum
A Bundy clock used by Birmingham Corporation Transport
Stopwatch
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A stopwatch is a timepiece designed to measure the amount of time that elapses between its activation and deactivation.
A digital stopwatch
Digital stopwatch
The first ever chronograph. A chronograph combines the functions of a stopwatch and a standard watch.
Mechanical chronograph Omega Speedmaster having two buttons (start/stop and reset) besides the crown