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Orrery wall clock.
Celebration rolling ball clock.
My plans as built by other clocksters flickr link.
Is calculating a fraction of the planetary orbits to 28.
4 6 out of 5 stars 1 038.
The orrery planetary clock is in working condition and has not been restored.
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12 modern large luminous quartz wall clock non ticking glow in the dark silent.
Gift yourself a unique astronomical device.
The orrery is an eight foot tall planetary display.
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The lower six layers are a mechanical binary calculation engine each with a geneva output to a gear that rotates a corresponding planet.
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The tellurium clock reproduces the annual orbit of the earth around the sun with the earth rotating around its axis once in 24 hours.
The clock height is approximately 440mm or 17 5 inches not including glass dome and the weight is 7lbs.
Orrery appeals to almost anyone interested in popular astronomy astronomical mechanical devices scientific instruments the history of clocks and even the history of aristocratic and prestigious families.
Adorning an elegant and solid mahogany and brass finish this device gets a premium and rich look.
The tellurion orrery is a finely engineered model demonstrating the earth and moon orbiting around the sun.
The moon in turn revolves around the earth in 29 5 days allowing the reproduction of the moon s phases as they are visible from earth.
The glass dome is approximately 500mm or 19 5 inches high and 200mm or 8 inches in diameter.
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The earth is tilted on its axis and is rotated by an auxiliary gear train.
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The fergusons orrery astronomical device commissioned by sternreiter and made entirely in the u s a.
There is also the option to add mercury and venus to this orrery.
The inner planet orrery includes the four home planets and the option to include dial chapter rings on the base.
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Many people these days not only astronomers have a good idea of the main components of the solar system.