Metal-plate work : its patterns and their geometry, also, notes on metals, and rules in mensuration for the use of tin, iron, and zinc plate workers, coppersmiths, boiler-makers, and others (1887)
Millis, C. T. (Charles Thomas) · London ; New York : E. & F.N. Spon · leaf 276
the body, of -wliioh we need the true lengths, lengths which we find as follows. Draw (Fig. 16) any two lines A F, 5'F at right angles to each other and intersecting in F. From F on F A set off FA equal to the height of the body, and from F on F 5' set off F 1' equal to 1' 1 or 5' 5 (Fig. 15), F 2'… … FS' equal to A 5' (Fig. 15). Join the points 6', 2', 3', and 1' to A ; then A' 1' will be the true length of 1' 1 or 5' 5 (Fig. 15), A 2' will be the true length of A 2' or A 4' (Fig. 15), and A 3' and A 5' will be respectively the true lengths of A 3' and A 5' (Fig. 15). To draw the pattern (body…
Plating · Metallurgy
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