An animation of a geared astrolabe created in 2010 for the Museum of the History of Science Oxford showing the oldest complete geared mechanism in the world. The gears drive a calendar display on the back of a medieval astrolabe.

The instrument can be found inthe collections database of the MHS: tiny.cc/3j8xow.

Loading more stuff…

Hmm…it looks like things are taking a while to load. Try again?

Loading videos…