Search the Dictionary

The quadrant of an azimuth circle.

Of or pertaining to the azimuth; in a horizontal circle. Azimuthal error of a transit instrument, its deviation in azimuth from the plane of the meridian.

An instrument for taking azimuths and altitudes simultaneously.

The tryne compas [the threefold world containing earth, sea, and heaven. Skeat.] Chaucer. Azimuth compass. See under Azimuth. -- Beam compass. See under Beam. -- Compass card, the eircular card attached to the needles of a mariner's compass, on which are marked the thirty-two points or rhumbs. -- Compass dial, a sma…

ic projection on the plane of the equator. By it are found the hour of the day, the sun's azimuth, the altitude of objects in degrees, etc. See Gunter's scale.

ing movable round to all points of the horizon, serves as a scale in measuring altitudes, azimuths, etc.

nd bearing, of places on the earth, and the right ascension and declination, altitude and azimuth, rising and setting, etc., of the heavenly bodies; spherical geometry. -- Music of the spheres. See under Music.

any elevation of the pole. -- Universal instrument (Astron.), a species of altitude and azimuth instrument, the peculiarity of which is, that the object end of the telescope is placed at right angles to the eye end, with a prism of total reflection at the angle, and the eye end constitutes a portion of the horizontal…

uch anthers as stand erect at the top of the filaments. -- Vertical circle (Astron.), an azimuth circle. See under Azimuth. -- Vertical drill, an drill. See under Upright. -- Vertical fire (Mil.), the fire, as of mortars, at high angles of elevation. -- Vertical leaves (Bot.), leaves which present their edges to th…