Elegant silver armillary sphere decor. Perfect for modern interiors. Its approximately 14.5 inches tall and 11.5 inches wide, its in good condition and ready to display.This object is an armillary sphere, an ancient astronomical instrument used to model the movement of celestial bodies. Overview and History Definition: Also known as a spherical astrolabe or armilla, it is a model of the sky consisting of a spherical framework of rings. Purpose: Historically, it was used by astronomers to track the path of the sun, calculate star coordinates, and determine times like sunrise and sunset.