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  2. Time clock - Wikipedia

    en.wikipedia.org/wiki/Time_clock

    Electronic time clock. 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 (or those on flexi-time) at a place of business. In mechanical time clocks, this was accomplished by inserting a heavy paper card, called a time card

  3. Watchclock - Wikipedia

    en.wikipedia.org/wiki/Watchclock

    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.

  4. Timesheet - Wikipedia

    en.wikipedia.org/wiki/Timesheet

    Contemporary time sheet. A timesheet (or time sheet) is a method for recording the amount of a worker's time spent on each job. Traditionally a sheet of paper with the data arranged in tabular format, a timesheet is now often a digital document or spreadsheet. The time cards stamped by time clocks can serve as a timesheet or provide the data to ...

  5. Unit record equipment - Wikipedia

    en.wikipedia.org/wiki/Unit_record_equipment

    2011: The owner of Cardamation, Robert G. Swartz, dies, and the company, perhaps the last supplier of punch card equipment, ceases operation. [73] [74] 2015: Punched cards for time clocks and some other applications were still available; one supplier was the California Tab Card Company. [75] As of 2018, the web site was no longer in service.

  6. Guard tour patrol system - Wikipedia

    en.wikipedia.org/wiki/Guard_tour_patrol_system

    The web-based version can work everywhere with internet access. In the analog age, the device used for this purpose was the watchclock. [3] Watchclocks often had a paper or light cardboard disk placed inside for each 24-hour period. The user would carry the clock to each checkpoint, where a numbered key could be found (typically chained in place).

  7. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    Early versions erred by less than one minute per day, and later ones only by 10 seconds, very accurate for their time. Dials that showed minutes and seconds became common after the increase in accuracy made possible by the pendulum clock. Brahe used clocks with minutes and seconds to observe stellar positions. [112]

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