A practical course in mechanical drawing for individual study and shop classes, trade and high schools (1912)
Willard, William Franklin, 1879- · Chicago : Popular mechanics company · leaf 22
20 A PRACTICAL COURSE IN describe an arc making angle 0. Duplicate this anglewith given point as center. Fig. 4. Exercise 4.—Divide two lines into proportional parts.Construction: Lay off one line into any number ofdivisions. Connect the extremities of each line. Bymeans of triangles draw parallels…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
