Orrery

David Rittenhouse, American, 1732–1796

Orrery, 1770

Wood and metal
Princeton University
PP693

An orrery is a model of the solar system used to determine planetary movement. Princeton's orrery became a symbol of scientific promise for America, as it was the first made in the United States. It was created in 1770 by David Rittenhouse, an astronomer and clockmaker from Philadelphia.