Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 57
draw these, firstput in a thin centre line down the paper, then mark the positions 54 PRACTICAL DRAUGHTSMENS WORK. where the curves cross the centre line 4 in. apart, and from theinner one measure 6 in. to point (Fig. 85), which is to be usedas the centre. Open the compasses wide enough to make… … Flat Curves* the pencil is at right angles to the paper, and then, holding thecompasses by the top, as in Fig. 86, swing them round carefullyto make the curve the required length. Do the same with theother two curves in Fig. 85, putting the dotted one in as a full
Mechanical drawing
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