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 24
At the ex-tremity of the radial on the circumference erect a 1.This is the required tangent. Fig. 6. Exercise 6.—Duplicate and bisect a given angle.Construction: Draw any two intersecting lines,making any convenient angle. To duplicate, draw CDwith any length. Describe an arc cutting given angleat… … Fig. 10 22 A PRACTICAL COURSE IN Exercise 7.—To draw angle of 60°. Construction:With any line as a base and any point therein as a cen-ter, describe an arc of any convenient radius, cuttingthe base line at C. With C as a center and radius ACdescribe arc at E. A line through AE is 60° to xAB.Bisect…
Mechanical drawing
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