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Definition of Alidad
1. Noun. Surveying instrument consisting of the upper movable part of a theodolite including the telescope and its attachments.
Exact synonyms: Alidade
Generic synonyms: Surveying Instrument, Surveyor's Instrument
Group relationships: Theodolite, Transit
Generic synonyms: Surveying Instrument, Surveyor's Instrument
Group relationships: Theodolite, Transit
2. Noun. Surveying instrument used with a plane table for drawing lines of sight on a distant object and for measuring angles.
Definition of Alidad
1. alidade [n -S] - See also: alidade