QUADRANT n.
having a graduated scale upon its arc, and an index arm, or alidade pivoted at its apex. Mirrors, called the index glass and the horizon glass, are fixed one upon the index arm and the other upon one side of the frame, respectively. When the instrument is held upright, the index arm may be swung so that the index glas…
REAR a.
Being behind, or in the hindmost part; hindmost; as, the rear rank of a company. Rear admiral, an officer in the navy, next in rank below a vice admiral, and above a commodore. See Admiral. -- Rear front (Mil.), the rear rank of a body of troops when faced about and standing in that position. -- Rear guard (Mil.), th…