Smith, Leslie John, 1881- [from old catalog] · New York, The Macmillan company · leaf 51
Toavoid confusion, it is highly desirable that the studentsshould put their initials on their equipment. The left edge of the drawing board must be true, forthe head of the T square slides against this edge. Drawingboards, when first purchased, generally need truing-upon the edge with a jointer… … Figure 24. lines with the pencil against the upper edge of the blade ofthe T square. Figure 24 shows the drawing board with Tsquare, 30^-60° triangle, and drawing paper, ready tobegin work. Steps in penciling and inking drawings. — i. Put draw-ing paper on center of board, fastening with four…
Mechanical drawing
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