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  2. Stopwatch - Wikipedia

    en.wikipedia.org/wiki/Stopwatch

    The text below the image shows the time that corresponds to the movement of the indicator around the stopwatch. A stopwatch is a timepiece designed to measure the amount of time that elapses between its activation and deactivation. A large digital version of a stopwatch designed for viewing at a distance, as in a sports stadium, is called a ...

  3. Ratchet (device) - Wikipedia

    en.wikipedia.org/wiki/Ratchet_(device)

    A ratchet consists of a round gear or a linear rack with teeth, and a pivoting, spring-loaded finger called a pawl (or click, in clocks and watches [1] [2]) that engages the teeth. The teeth are uniform but are usually asymmetrical , with each tooth having a moderate slope on one edge and a much steeper slope on the other edge.

  4. Mechanical watch - Wikipedia

    en.wikipedia.org/wiki/Mechanical_watch

    The hand-winding movement of a Russian watch. A mechanical watch is a watch that uses a clockwork mechanism to measure the passage of time, as opposed to quartz watches which function using the vibration modes of a piezoelectric quartz tuning fork, or radio watches, which are quartz watches synchronized to an atomic clock via radio waves.

  5. Mainspring - Wikipedia

    en.wikipedia.org/wiki/Mainspring

    A modern watch mainspring is a long strip of hardened and blued steel, or specialised steel alloy, 20–30 cm long and 0.05-0.2 mm thick. The mainspring in the common 1-day movement is calculated to enable the watch to run for 36 to 40 hours, i.e. 24 hours between daily windings with a power-reserve of 12 to 16 hours, in case the owner is late ...

  6. Come-along - Wikipedia

    en.wikipedia.org/wiki/Come-along

    A similar heavy-duty unit with a combination chain and cable became available in 1935 that was used by railroads, but lacked the success of the cable-only type units. [ 1 ] A similar tool to a come-along is a cable puller , which does not have a drum and ratchet but directly grips the cable, allowing unlimited lengths of wire rope to be used.

  7. Timer - Wikipedia

    en.wikipedia.org/wiki/Timer

    A typical kitchen timer. A timer or countdown timer is a type of clock that starts from a specified time duration and stops upon reaching 00:00. An example of a simple timer is an hourglass. Commonly, a timer triggers an alarm when it ends. A timer can be implemented through hardware or software.

  8. Wheel train - Wikipedia

    en.wikipedia.org/wiki/Wheel_train

    In watches during setting it is turned by the minute wheel, which is turned by the keyless works. In older clocks the setting was done by opening the face and manually pushing the minute hand which rotated the cannon pinion directly. A minute wheel whose pinion drives the hour wheel. During setting it is driven by the intermediate wheel in the ...

  9. Windows Clock - Wikipedia

    en.wikipedia.org/wiki/Windows_Clock

    Windows Clock (known as Clock & Alarms on Pocket PC 2000, [2] Alarms on Windows 8.1, and, until July 2022, Alarms & Clock on Windows 10) is a time management app for Microsoft Windows, with five key features: alarms, world clocks, timers, a stopwatch, and focus sessions. The features are listed on a sidebar.