Industrial drawing and geometry; an introduction to various branches of technical drawing (1911)
Spooner, Henry John, 1856- · London, New York [etc.] Longmans, Green, and co. · leaf 168
Pig. 509.—Development of thehole in pipe nin. Pig. 511.—Development of cone. of the arcs they represent cannot be quite the same. Therefore, to get the Because it can be proved that 6 : 360° :: E : L, where E is the radius of the cones base. In Fig. 511 L = 3E, .-. 6 = ^^ = 120°. 267. Developments…
Mechanical drawing · Geometrical drawing
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