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  2. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    It is also possible for quartz clocks and watches to have their quartz crystal oscillate at a higher frequency than 32 768 (= 2 15) Hz (high frequency quartz movements [4]) and/or generate digital pulses more than once per second, to drive a stepping motor powered second hand at a higher power of 2 than once every second, [5] but the electric ...

  3. Omega Electroquartz - Wikipedia

    en.wikipedia.org/wiki/Omega_Electroquartz

    Jaeger-LeCoultre: Branded as Masterquartz however this has only been seen as a movement with dial and not as a production watch. 6. Omega SA: Branded as Electroquartz and available in 18-carat gold and stainless steel models [6] 7: Longines: Branded as Quartz-Chron, this has only ever been seen as a single production watch in stainless steel. 8.

  4. Omega Marine Chronometer - Wikipedia

    en.wikipedia.org/wiki/Omega_Marine_Chronometer

    With the Omega Marine Chronometer wristwatch movement of 1974 as a basis a Quartz Marine Chronometer clock movement was designed with a high-frequency 4.19 MHz (2 22 or 4,194,304 Hz) quartz oscillator that should be capable of an accuracy of approximately ± 0.01 second/day. Where quartz elements were usually lens-shaped, this one was barrel ...

  5. Hermle Clocks - Wikipedia

    en.wikipedia.org/wiki/Hermle_Clocks

    In the 1970 they expanded to engineering and quartz movement clocks. Hermle Clocks is a German family owned and operated company in its third generation, Rolf Hermle joined the board in 1978. Hermle manufactures mechanical mechanisms, battery operated mechanisms, accessories such as dial, pendulums, weight shells, and do-it-yourself clock kits ...

  6. Automatic quartz - Wikipedia

    en.wikipedia.org/wiki/Automatic_quartz

    Automatic quartz is a collective term describing watch movements that combine a self-winding rotor mechanism [1] (as used in automatic mechanical watches) to generate electricity with a piezoelectric quartz crystal as its timing element. Such movements aim to provide the advantages of quartz without the inconvenience and environmental impact of ...

  7. Comitti of London - Wikipedia

    en.wikipedia.org/wiki/Comitti_of_London

    For Queen Elizabeth II’s Diamond Jubilee, Comitti created an architectural floor clock with an English regulator movement, [7] now in Buckingham Palace. [8] [9] At 2015 Comitti remains a family-owned business, run by the fifth generation. It continues to manufacture traditional luxury timepieces.