0 a clock which employees use to record the particular point in the day at which they arrive at and leave work
1 a clock that employees use to record the time when they arrive at and leave work
2 a machine, sometimes connected to a computer, that records the time at which a worker starts and finishes work:
Five temperature- and light-controlled incubators and a refrigerator, equipped with a light and a time clock, were used in the studies.
Following this, the water drop sounded, initiating the reaction time clock, and the two faces appeared.
The reaction time clock was not activated until the water drop sound was heard, so responses attempted before the end of the sentence were not recorded.
In one sense, say, measuring micro-movements using a finely calibrated time clock, it is at times true that movements follow one upon another with short lags in between.
I know that the time clock can go wrong, but surely it cannot go wrong that often.
He sometimes gives the impression that his personal time clock stopped at about 1912.
That time clock is supervised, initially electronically, with the electronic work checked by engineers.
The second example was not displaying a badge or a time clock.
