Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 144
l thereetlfieation of the small arcs of the plan.431. To turn a right angle with a jiij)e by J f/, 1 a four-piece elbo/w. Supposing that the blast pipe of a furnace was ti> be carried around a bend by a four-piece elbow; the procedure wouldstill closely resemble that of the last problem. Instead…
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
