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4 to 8 of 227 glossary terms
almucantars: lines of equal altitude on a projection of the heavens based on the local horizon.
altazimuth theodolite: theodolite for measuring altitude and azimuth simultaneously, see article on the theodolite.
altitude: angle above and perpendicular to the horizon, or an angular elevation above the horizontal direction in the same azimuth.
altitude dial: sundial measuring time from the altitude of the sun.
armillary sphere: set of rings corresponding to the circles of the celestial sphere, see article on the armillary sphere.
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