Kenison, Ervin, Gardner, Harry W, Lawrence, William Henry, 1868-, Everett, Herbert E. (Herbert Edward), 1863-1932, Gregg, D. A. (David A.), Von Holst, H. V. (Hermann Valentin), 1874-1955, Brown, Frank Chouteau, 1876-1947, Griffin, Charles Lewis, 1867-, Neubecker, William, 1864-, Zapf, Alfred E, American School (Lansing, Ill.) · Chicago, Ill. : [American School of Correspondence] · leaf 420
t still clearer we will prove the length of the line B1 D1. Take the distance of A1 B1, place it in plan as shown by A B2, and complete the rectangle A B2 C2 D. Draw the diagonal B2 D, being the length sought, which will be found to equal B1 D1 in elevation. When drawing this problem in practice,… … employed, and without it no true pattern could be obtained for these irregular shapes; hence the necessity of close study. In Fig. 9 is shown an irregular solic^ whose base and top are triangles crossing each other, and in which the principle just explained will be put to practical test Inscribe…
Mechanical drawing
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