| The Trippensee Planetarium is a demonstration model of the
movement of the earth, moon and Venus relative to each other and to
the sun. It shows such phenomena as the succession of seasons,
and solar and lunar eclipses. In addition to its educational
objective, the tellurian is also decorative and entertaining.
The original models, patented in 1908 have maple arms and central
standards
Shield-form Cartouche on arm: The/ Trippensee/ Mfg. Co.,/
Detroit,/ Michigan. Additional Legend on Globe: Rand, McNally & Co's/ New 3 Inch/ Terrestrial Globe/ Copyright
1891, by/ Rand McNally & Co.
with a terrestrial globe rotating at the end of a maple arm, and
with a black-and-white painted wood representation of the moon
revolving the earth, both revolving around a central brass sphere
representing the sun, and with a black-and-white painted wood
representation of Venus also revolving the sun. The entire assembly
is mounted on a turned maple central standard, set on a round,
stepped and weighted brass base, with an inset circular zodiac dial. When turned by hand by a metal post under the
arm, the earth rotates, and the earth, moon and Venus revolve.
The three-inch terrestrial globe was manufactured by Rand McNally and
copyrighted 1891; oceans are colored blue, the United States pink,
Canada yellow, and Mexico green, with similar colouring throughout.
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