Machine drawing, a practical guide to the standard methods of graphical representation of machines, including complete detail drawings of a duplex pump and of a direct-current generator (1920)
Griffin, Charles Lewis, 1867- [from old catalog], Adams, Charles Clyde, 1882- [from old catalog] joint author · Chicago, American technical society · leaf 115
be divided into 8 parts, but these parts mustbe such that, beginning with the point A, the distances A-l, 1-2, 2-3,and 3-4 shall be in the ratio of 1, 3, 5, and 7; and the distances 4-5,5-6, 6-7, and 7-e shall be in the ratio of 7, 5, 3, and 1; in other wordsA-l is 3V of the whole line Ae; 1-2 is… … any convenient distance as aunit, mark it off on this line 32times, beginning at A. From I,the last of these dividing points, drawa line to e; next find the point B, thefirst division from A; C the third from B, Dthe fifth from C, E the seventh from D, F theseventh from E, G the fifth from F, H…
Machinery
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