Philosophical instructor, or, Webster's elements of natural philosophy : subdivided into principles and illustrations ; intended for academies, medical schools, and the popular class-room (1824)
Eaton, Amos, 1776-1842, Webster, John, fl. 1804-1824 · Albany : Printed by Websters and Skinners ... · leaf 18
17. Line of chords, is a graduatedline connecting the two ends of a gra-duated quadrant by a chord line. Itis made by setting one foot of the di-viders at a, and extending the otherfoot to each degree on the arc, andturning it down to the chord line.«The chord line is used in plotting or…
Physics
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