English: Greubel Forsey's Double Tourbillon Technique features their Double Tourbillon 30° regulator, four fast-rotating co-axial barrels and a visible spherical differential driving the power reserve indicator.
At the 2011 International Timing Competition held by the Horological Museum in Le Locle, Switzerland, a Greubel Forsey Double Tourbillon Technique took first prize overall, as well as first prize in the Tourbillon category.
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{{Information |Description ={{en|1=Greubel Forsey's Double Tourbillon Technique features their Double Tourbillon 30° regulator, four fast-rotating co-axial barrels and a visible spherical differential driving the power reserve indicator. At the 20...
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www.greubelforsey.com
Copyright holder
Toutes les images Greubel Forsey sont soumisesà autoristation de publication. Merci de contacter le service de communication.Greubel Forsey SAEplatures-Grise 16Case postale 6702301 La Chaux-de-FondsTél:+41 32 925 45 45Fax:+41 32 925 45 02