) Tellurium, ca. 1800 Florence, Istituto e Museo di Storia della Scienza, inv. This device shows the Earth's movement around the Sun and the Moon's movement around the Earth, albeit in a simplified form and not to scale.
A view showing the gear work mechanism of an unfinished orrery, made by the famous instrument maker Jesse Ramsden. The orrery was invented in 1710 by George Graham, and derives its name from his patron, the Earl of Orrery.
Here's a rendering of an orrery (the correct spelling ;-) -- I was looking for actual ones and this digital artwork piece came up - very cool. The larger one is pinned too (nice to see the detail, but I wanted you to see where it came from too.