Muhammad ibn Abi Bakr al Ibari century) Astrolabe with geared calendar, Oxford, Museum of the History of Science. Of Persian origin, and one of the oldest complete devices of it's like in the museums collection.
This is one of those awesomely intricate multipurpose compasses that also works as a sundial, an astrolabe, and a moondial. It probably even has a miniature piece that functions as a weather vane to tell you which way the wind is blowing.
Midnight Planétarium is an incredible timepiece that features six bejewelled planets in our solar system accurately rotating around our Sun. The watch was created by Van Cleef & Arpels in partnership with Christiaan van der Klaauw.