Trippensee planetarium (US), 1930
Diameter: sun: 14,5 cm earth: 7,5 cm
Total height: 35 cm. Total length 50-60cm. Arm length: 42 cm.
Planetarium is in very good
condition, everything works. The earth is paperbased, the two planets are
wood, the sun is plastic and the base and arm are bakelite. The compass works
fine. The earth rotates with chain and gears. Very minor signs of wear,
no dents or dings, but the
bakelite base had a small piece break, and was
repaired. Basically this unit accurately duplicates orbital relationship
of Sun, Earth, Moon, Venus, as well as many other concepts through
chain-driven gears rotating the arms of the unit. Moon and Venus are
made of wood. These planetariums are durable and reliable gear and
ladder chain driven so that the earth maintains its 23-1/2° axis,
revolves around the sun and rotates on its axis, all at the same time.
The moon revolves around the earth and keeps its one face toward the
Earth. Venus also revolves around the sun, and can be positioned by
hand, as well, to show phases and where it is located as the morning or
evening star. Among the phenomena which the models show are the
following: phases of the moon, eclipses of the sun and moon, causes of
night and day, seasons in various parts of the Earth, reasons for winter
and summer, what the solstices and equinoxes are, the axis of the Earth
and its relationship to the North Star, about the tides and their
causes, the earth's equator, latitude, longitude and meridians. The Trippensee models have been produced for over
100 years and provide many
visual demonstrations that clarify the relationships of these elements
of the solar system, in motion, for children and adults interested in
learning more about the universe around them. The chain and gear drives
on this model provide an exceptionally long life for the product and
provide a model that is unequalled in the marketplace today.
Cartouche: The Trippensee Mfg., Co. Detroit, Mich.On the Bakelite arm: The Trippensee planetarium CO. Saginaw Mich.
$ 950,- or € 750,-