Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Arcturus to Augur

Astrolabe

sextant

Astrolabe, astronomical instrument dating from ancient times, used to measure the altitude and movements of celestial bodies. Before the introduction of the sextant, it served as a navigational aid.

See also: Sextant.

Astrology [next] [back] Astroarcheology

User Comments

Your email address will be altered so spam harvesting bots can't read it easily.
Hide my email completely instead?

Cancel or