Practical mechanical drawing and machine design self taught .. (1907)
Westinghouse, Charles. [from old catalog] · Chicago, F. J. Drake & co. · leaf 36
and AB respectively.At the points of intersection of the circumferenceof the circle by the lines EF and GH, draw the lines KP, RM, NT and SL parallel with the linesEF and HG respectively, then PRMNTSLK is therequired octagon. To draw a straight line equal in length to agiven portion of the… … equal to three of the four parts of RB. At A drawthe line AF parallel to CD and then draw the lineECF which is equal to one-fourth of the circum-ference of the circle ACBD. If lines be drawnfrom E through points in the circumference of thecircle as 1 and 2, meeting the line AF and G and H,then C-1,…
Mechanical drawing · Machine design
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