Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 171
Fig. 316. ,JB^ … Fig. 317.- ^ A a, making an angle of 35°16 with A C. The anglef. made by the ray of light in \ ^, , space with the planes of pro- •, y N, jection, a\ the point of inter- A \ section of the line with the ,- -——■ \ semicircle, projected to a, gives cr- -- yu a point of the outline of the ----- --…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
