[A 1930s model of the Earth's rotation around the Sun]
TRIPENSEE PLANETARIUM COMPANY.
[Tellurian.] Saginaw, Michigan, c.1930. Tellurian, with Bakelite Sun, arm and base (with iron weight), Earth with paper gores, wooden Moon and Venus, chain mechanism, compass on arm. Earth, Moon and Venus with signs of wear.
A tellurian, an instrument that demonstates the movement of the Earth around the Sun, how the seasons result from the tilt of the earth, and how the Earth's rotation on its axis cause night and day. The movements of the Moon and Venus also feature in the mechanism.
[Ref: 16927] £2,200.00 including VAT ($2,838 • €2,607 rates)