Astrolabe (possibly 13th century). Instrument historically used by astronomers and navigators to locate the positions of the Sun, Moon, planets, and stars and to determine latitute and longitude of a position.

- Image ID: EREX3T
Astrolabe (possibly 13th century). Instrument historically used by astronomers and navigators to locate the positions of the Sun, Moon, planets, and stars and to determine latitute and longitude of a position.
Lebrecht Music & Arts / Alamy Stock Photo
Image ID: EREX3T
Astrolabe (possibly 13th century). Instrument historically used by astronomers and navigators to locate the positions of the Sun, Moon, planets, and stars and to determine latitute and longitude of a position.