Armillary sphere

Metal armillary sphere on a wooden base. It is made of a framework arranged in circles showing the equator, ecliptic plane, and the astronomical lines of latitude and longitude. The Earth, Moon, and Sun are at the center of the sphere, which can be used to observe the movements of these astronomical bodies. The spheres that represent the planets are missing from this piece. It is from the school of Sena in Huesca.