Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 170
FiG. 312. … Fig. 313. Fig. 314. Fig. 315. onal m o, parallel to the line of light A E, and construct a square, mnop (Fig.315); from one of the extremities, o, draw the line o r, parallel to A B, andthrough the opposite extremity, w?, draw a perpendicular, r 5, to this line, andset off on the perpendicular the…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
