Bible Dictionaries
Alidade

Webster's Dictionary

(n.) The portion of a graduated instrument, as a quadrant or astrolabe, carrying the sights or telescope, and showing the degrees cut off on the arc of the instrument

Bibliography Information
Webster, Noah. Entry for 'Alidade'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​a/alidade.html. 1828.