Dictionaryal•i•dadePronunciation: (al'i-dād"), [key] —n. Survey. 1. (in plane-tabling) a straightedge having a telescopic sight or other means of sighting parallel to the straightedge. 2. the entire upper part of a theodolite or transit, including the telescope, its supports, the level vials, the circle-reading device, and the spindle. Also,al•i•dadPronunciation: (al'i-dad"). [key] Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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