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 261
250 METAL-PLATE WOKK. equal to Z L (Fig. 6). Then MLLM will complete the pattern required. In connection with this see § 89, p. 245. To draw the pattern for the smaller piece of pipe, the longitudinal seam to correspond with the line A" A' (Fig. 6). Draw (Fig. 8) an indefinite A' A'. In it take any… … and / G' (Fig. 6), that is, equal to one another. Through A'', B', C, D', E', F', and G' draw indefinite lines A' A", B' B", C C", D'D", E'E", F'F", and G' G" perpendicular to A' A' ;' and make A' A" equal to A' A" (Fig. 6), B' B" equal to B' B" (Fig. 6), C C" equal to C C" (Fig. 6), and D' D", E'…
Plating · Metallurgy
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.