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Greubel Forsey - Quadruple Tourbillon

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Uploaded by on Nov 7, 2010

The four tourbillon movements are separated into two cages. Basically, each cage has a tourbillon within a tourbillon. A spherical differential takes all that power and transmits it to the movement in order to tell the time.

Two double-tourbillon cages, each comprised of 128 parts. This extremely complex and ingenious system of paired tourbillons is designed to offer performance advantages over traditional tourbillons, which compensate for gravity's influence only in the vertical position. The inner tourbillon is inclined at a 30-degree angle and completes a single revolution each minute, while the outer tourbillon revolves once every four minutes. In addition to these complications, the watch also showcases a power reserve indicator, and a small seconds display.

In the manner of all Greubel Forsey creations, the Quadruple Tourbillon A Differential watch showcases exceptional attention to matters of finish and execution. Each of the 531 parts in the movement are finished by hand; jewels are olive-domed and set in countersinks, and the free-sprung balance wheels are fitted with a Phillips-curve hairspring and white gold meantime screws. Mainplates are made from nickel silver, and the dial-side tourbillon bridges are crafted from sapphire. The steel tourbillon bridges, visible from the movement side, have been finished with anglage and a rich black polish. Rapidly rotating twin mainspring barrels assure a power reserve of 50 hours.

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  • it's not so much technology anymore...but craftsmanship...we craft things,some good,some bad....

    watches good...people are bad.

    :o)

  • Humans are capable of such technology .. why can't we solve simpler problems like enough food, energy, etc?

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