====== Jacob & Co Astronomia Tourbillon ======

{{wst>image_cr|Jacob & Co|Astronomia Tourbillon}}

**Astronomia Tourbillon** is a luxury watch from [[Jacob & Co]].

In [[2016]], Jacob & Co. launched Astronomia, a revolutionary timepiece of unheard-of complication and proportions. In a 47mm case made of [[gold]] with a [[sapphire]] baseband, a vertical, rotating movement is set up whose satellite carriage bears four arms. One is a twin-axis [[tourbillon]], another is a rotating dial fitted with a differential to keep it upright, one is a 288-facet Jacob-cut [[diamond]] representing the moon, and the fourth is a [[magnesium]] earth globe.
 
All four arms are in rotation around their own axis and around the central axis as they orbit inside the case in 20 minutes. This, incidentally, creates a third rotation axis for the tourbillon carriage. Astronomia has no crown, no central hands, and nothing in common with any other usual timepiece.

{{tag>Watch_models Jacob_&_Co_models Watches_with_tourbillon Watches_with_moon_phase}}