Grand Orrery – Mechanical Clockwork Universe

This 18th century device is an incredible piece of kit. When looking at the side you see a model of inner planets. When looking from above that changes and you see a complex clockwork mechanism.

For those of you who are not sure what an Orrery is… it is a mechanical model built to show the alignment of planets and moons. In the centre of the Orrery you tend to find the Sun which then has arms which rotate mechanically around it on arms.

Via: Oobject