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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 236

An illustration from 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, leaf 236
e its pattern can be drawn (see Problem YIII., p. 41), thus. Draw (Fig. 91) a line D D' (the line D D' left of E A') equal to D D" (Fig. 90). With D and D' as centres and radii respectively equal to D F and D' c' (Fig. 90) describe arcs intersecting in c'. With D' and D as centres and radii… … Similarly to find A and A', and the points h and &c., on the right-hand side of A A'. Through the points D', c', &', A', h', c\ D' draw an unbroken curved line. Also through D, c, 6, A, h, c, D draw an unbroken curved line, and join D D'. This completes the pattern for the 0 A 0' A' portion of back…

Plating · Metallurgy

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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