Hypertext Webster Gateway: "alidad"
From WordNet (r) 1.7 (wn)
alidad
n 1: surveying instrument consisting of the upper movable part of
a theodolite including the telescope and its attachments
[syn: {alidade}]
2: surveying instrument used with a plane table for drawing
lines of sight on a distant object and for measuring
angles [syn: {alidade}]
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