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  2. Timekeeper - Wikipedia

    en.wikipedia.org/wiki/Timekeeper

    In addition, a timekeeper records time, time taken, or time remaining during events such as sports matches. Along with the game clock , a timekeeper may be needed to manage clocks other gameplay clocks, including play clocks , pitch clocks , and shot clocks .

  3. John Arnold (watchmaker) - Wikipedia

    en.wikipedia.org/wiki/John_Arnold_(watchmaker)

    John Arnold (1736 – 11 August 1799) was an English watchmaker and inventor.. John Arnold was the first to design a watch that was both practical and accurate, and also brought the term "chronometer" into use in its modern sense, meaning a precision timekeeper.

  4. History of timekeeping devices - Wikipedia

    en.wikipedia.org/wiki/History_of_timekeeping_devices

    An Egyptian method of determining the time during the night, used from at least 600 BC, was a type of plumb-line called a merkhet. A north–south meridian was created using two merkhets aligned with Polaris, the north pole star. The time was determined by observing particular stars as they crossed the meridian. [24]

  5. Pendulum clock - Wikipedia

    en.wikipedia.org/wiki/Pendulum_clock

    The French Time Service included pendulum clocks in their ensemble of standard clocks until 1954. [21] The home pendulum clock began to be replaced as domestic timekeeper during the 1930s and 1940s by the synchronous electric clock, which kept more accurate time because it was synchronized to the oscillation of the electric power grid.

  6. Timekeeper (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Timekeeper_(disambiguation)

    Timekeeper is a person that measures the passage of time. Timekeeper(s) or The Timekeeper(s) may also refer to: Timekeeper (instrument), a timepiece; The Time Keeper, a 2012 novel by Mitch Albom; The Timekeeper, a 1992 Circle-Vision 360° film that was presented at three Disney parks around the world

  7. John Harrison - Wikipedia

    en.wikipedia.org/wiki/John_Harrison

    The clockwork in Harrison's H4 watch Drawings of Harrison's H4 chronometer of 1761, published in The principles of Mr Harrison's time-keeper, 1767. [16] Harrison's first "sea watch" (now known as H4) is housed in silver pair cases some 5.2 inches (13 cm) in diameter.

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