Epact Scientific Instruments of Medieval and Renaissance Europe

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5 to 9 of 227 glossary terms
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.
aspectarium: aide-memoire which depicts the astrologically significant angles (or aspects) between the planets.
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