A 1930s model of the Earth’s rotation around the Sun
[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. Height 340mm, width (at most) 560mm
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A 1930s model of the Earth’s rotation around the Sun & TRIPPENSEE PLANETARIUM COMPANY.Stock #: 25183"*" indicates required fields
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Description
A fine example of a tellurian, an instrument to demonstrate: the movement of the Earth around the Sun; how the seasons result from the tilt of the earth; how the Earth's rotation on its axis cause night and day; and the waxing and waning of both the Moon and Venus. The base is graduated to show the seasons, months and the Zodiac.

![[Untitled terrestrial globe] by MALBY & Co., 1840.](https://altea-gallery-cdn.s3.eu-west-2.amazonaws.com/wp-content/uploads/2025/07/03124603/alteashop_25762-300x300.jpg)
![[Tellurian.] by TRIPPENSEE PLANETARIUM COMPANY., 1930.](https://altea-gallery-cdn.s3.eu-west-2.amazonaws.com/wp-content/uploads/2025/06/05142804/alteashop_25183.jpg)


![[A 48 inch brass navigator's scale rule.] by CARY, William., 1800.](https://altea-gallery-cdn.s3.eu-west-2.amazonaws.com/wp-content/uploads/2025/05/13145540/alteashop_22524-300x102.jpg)
![[Untitled terrestrial globe] by MALBY & Co., 1840.](https://altea-gallery-cdn.s3.eu-west-2.amazonaws.com/wp-content/uploads/2025/07/03124603/alteashop_25762-300x220.jpg)
