Solid Brass Demonstrational Armillary Spheres
Small $22.95
Regular $77.95
Armillary spheres have become an icon of science with their elegant rings and beautiful silhouettes.
Eratosthenes may have invented armillary spheres around 255 BC.
These instruments are made up of a set of graduated rings representing circles on the celestial sphere,
such as the meridian, equator, ecliptic horizon, tropics, and colures.
With the aid of an armillary sphere, one can track the path of the sun for any given day of the year or
determine a star's coordinates.
The Earth is represented by the brass sphere located at the center of the armillary sphere.
These elegant reproductions of European Demonstrational Armillary Spheres show relationships
among significant lines and points in the sky, including The Celestial Equator, the Celestial Poles,
the Ecliptic and the Vernal Equinox.
The signs of the zodiac divide the ecliptic rings and these Armillary Spheres also have an extra divided
axis where the entire celestial sphere can be set to any angle.
The rims of the armillary spheres are marked "A PARIS Chez G. Gobille a P Ache Royalle."
These solid brass armillary spheres feature a rich antique patina finish that will not tarnish or show fingerprints.
The heavy solid brass bases are mounted on turned solid hardwood, and the bottoms
are covered with felt.
The Small Brass Demonstrational Armillary Sphere measures 5 inches (12.7 cm) tall,
3 1/2 inches (8.9 cm) in
diameter, and weighs 12.3 ounces (350 g).
The Regular Sized Brass Demonstrational Armillary Sphere measures 11 inches (28 cm) tall, 7 1/2 inches (19 cm) in
diameter, and weighs 3.6 pounds (1.6 kg).
We also carry several Armillary Sphere Sundials, a Celestial Armillary Globe and a Universal Equinoctial Sundial.
The Small Brass Demonstrational Armillary Sphere is available for only $22.95 and the Regular Size Sphere is $77.95.
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