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12 to 16 of 227 glossary terms
astrolabum catholicum: type of universal astrolabe, see article on the astrolabe.
astrological houses: 12-part division of the heavens centred on the celestial pole, also called 'houses of heaven', see article on the astrolabe.
astrological instrument: an instrument whose primary use was for astrological purposes, such as casting horoscopes, rather than for observational astronomy.
astronomical clock: a clock incorporating astronomical instruments such as an astrolabe or armillary sphere.
astronomical compendium: several instruments compiled into one device, see article on the astronomical compendium.
