Constructive drawing. A text-book for home instruction, high schools, manual training schools, technical schools and universities (1904)
Hanstein, Herman. [from old catalog] · Chicago, New York [etc.] Keuffel & Esser co. · leaf 46
Hansteins Constnictive Di-nwiutj. TANGENTIAL CIRCLES. 78.—Fig. 1.—Problt:!!.—To divide the surface of acircle into three equivalent parts bounded by sejni-circles.Solution.—Let C be the given circle. Divide the diameter D A into 6 equal parts, and describe with 1 and 5 as centers, 1 D as radius,…
Mechanical drawing
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