John Rowley Orrery
Reproduction, 1849

John Rowley Orrery
John Rowley Orrery
Item# A8001F
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Fine Art Reproduction

An orrery of John Rowley. Detail of an engraving from The Universal Magazine (1749).

An orrery is a mechanical device that illustrates the relative positions and motions of the planets and moons in the solar system in heliocentric model. They are typically driven by a large clockwork mechanism with a globe representing the Sun at the centre, and with a planet at the end of each of the arms.

See Wikipedia for definition of Orrery