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  2. Galileo's escapement - Wikipedia

    en.wikipedia.org/wiki/Galileo's_escapement

    The existing clocks of the time, which used the verge escapement with a crude balance wheel, were very inaccurate. The pendulum, due to its isochronism, could be a much better timekeeper. His son Vincenzio began building a clock, but both he and Galileo died before it was completed.

  3. Escapement - Wikipedia

    en.wikipedia.org/wiki/Escapement

    A great leap in the accuracy of escapements happened after 1657, due to the invention of the pendulum and the addition of the balance spring to the balance wheel, [29] [14] [23]: 124-125 which made the timekeepers in both clocks and watches harmonic oscillators. The resulting improvement in timekeeping accuracy enabled greater focus on the ...

  4. Balance wheel - Wikipedia

    en.wikipedia.org/wiki/Balance_wheel

    A balance wheel, or balance, is the timekeeping device used in mechanical watches and small clocks, analogous to the pendulum in a pendulum clock. It is a weighted wheel that rotates back and forth, being returned toward its center position by a spiral torsion spring , known as the balance spring or hairspring .

  5. Verge escapement - Wikipedia

    en.wikipedia.org/wiki/Verge_escapement

    The verge escapement consists of a wheel shaped like a crown, called the escape wheel, with sawtooth-shaped teeth protruding axially toward the front, and with its axis oriented horizontally. [ 13 ] [ 36 ] In front of it is a vertical rod, the verge, with two metal plates, the pallets, that engage the teeth of the escape wheel at opposite sides.

  6. File:EUR 1995-1657.pdf - Wikipedia

    en.wikipedia.org/wiki/File:EUR_1995-1657.pdf

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  7. File:EUR 1997-1657.pdf - Wikipedia

    en.wikipedia.org/wiki/File:EUR_1997-1657.pdf

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  8. Clock - Wikipedia

    en.wikipedia.org/wiki/Clock

    Balance wheel, the oscillator in a mechanical mantel clock. The timekeeping element in every modern clock is a harmonic oscillator, a physical object that vibrates or oscillates repetitively at a precisely constant frequency. [2] [83] [84] [85] In mechanical clocks, this is either a pendulum or a balance wheel.

  9. Echappement naturel - Wikipedia

    en.wikipedia.org/wiki/Echappement_naturel

    The échappement naturel was the invention of Abraham-Louis Breguet, one of the most eminent watchmakers of all time.Following the introduction of the detent chronometer escapement with a temperature compensated balance, very close rates could be achieved in marine chronometers and to a lesser degree in pocket chronometers.