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126
SHEET METAL DRAFTING
profile of the barrel at point a, line 2 at point b, and line 3 at point c. Extension lines are carried up into Fig. 171 from points a, b, and c of Fig. 172. At the points where these lines intersect
Figs. 171-175.—Boat Pump.
corresponding lines in Fig. 171, will be the location of the new points a, b, and c of Fig. 171. A curved line traced through these points will give the developed miter line.
