themagicfarawayttree: “ Diptych Dial, by Thomas Tucher, Nuremberg, c. “Diptych dials are portable instruments, usually made from ivory. They were mainly produced in Nuremberg from the late fifteenth century onwards. They are based on the.
The “Codex Rotundus” owes its name to its round shape. It is a small book of hours cm diameter) made in Bruges in Thumbnails are most likely from the workshop of Dutchman Willem Date illuminator (active from 1450 to (Hildesheim Cathedral Library, Germany)
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.