Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 60
ecircumference is then divided into twelve equal parts. Now joineach opposite joint by a line passing through the centre and thefigure will be complete. The last figure to be drawn (Fig. 93, p. 56) is the most difl[icult, buthas the best effect, so it is worth taking some pains over. Drawthe two… … Fig, 94.—Old-fashioned Hollow Edge of CastingSi the smallest semicircle on each side. Then set it to J in. radius,and put in the next semicircle ; then to fin. radius for the nexttwo semicircles, which should exactly meet at the centre. Nowto 1 in. radius, and, lastly, to 1J in. radius, checking…
Mechanical drawing
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