Rosewood Base Table Decor with Brass Armillary Sphere and World Globe, a nautical gift. Armillary spheres, with their graceful rings and lovely outlines, have come to represent science. It's possible that Eratosthenes created armillary spheres in 255 BC. The ecliptic horizon, tropics, colures, meridian, and other circles on the celestial sphere are represented by a collection of graded rings that make up these instruments. An armillary sphere may be used to trace the sun's motion on any given day of the year or find the coordinates of a star. In the armillary sphere, the brass spherical in its center represents the earth. This desk globe is lovely and would look great in any house or workplace. For every occasion, this brass globe with a nautical theme is the ideal present. This desk globe is in perfect working order. The finish of this brass nautical globe is antique brass. This brass nautical globe is an exact copy of the planet Earth. A great maritime souvenir for any house or business is this brass globe with a nautical theme. For birthdays, housewarming celebrations, anniversaries, weddings, business presents, and many other events, this nautical brass globe is the ideal present. Any house or workplace should have this brass nautical globe. The diameter of this brass nautical globe is 12 inches.