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 24
they are horizontal and parallel. Now place one of the triangles resting on the T-square as shown at E, and hav- ing the left-hand edge passing through the point D. The vertical line D A may be drawn, and by sliding the triangle along the edge of the T-square to the position F the line B C may be… … and sliding the triangle F along its upper edge, the sides A B and D C may be drawn. To draw the sides A I) and B C the triangle should be used as shown at E. Compasses. Compasses are used for drawing circles and arcs of circles. They are made of various materials and in various sizes. The cheaper…
Mechanical drawing
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