astroscope

Century Dictionary and Cyclopedia

1. n. An astronomical instrument composed of two cones on the surfaces of which the constellations with their stars are delineated. It was formerly used as a substitute for the celestial globe.

Wiktionary

1. n. An old astronomical instrument formed of two cones, on whose surface the constellations were delineated.

GNU Webster's 1913

1. n. An old astronomical instrument, formed of two cones, on whose surface the constellations were delineated.