Excerpt from Mechanical Drawing Problems
Fig. 2. - Position of triangles for drawing 15 and 7 5 lines.
Lines Used. - The various lines Shown in Fig. 3 are of the kind used by most draftsmen, and may be considered as standard. In drawings which are to be inked or traced, continuous pencil lines may be used where there is no likelihood Of an error when inking.
Border Lines - The object of a border line is to give the draw ing a finished appearance. The border line and the trimming line should be drawn in pencil before the drawing itself is begun, and should have the dimensions shown in Fig. 4. When inking, the border line Should be the last line drawn.
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