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 121
= the actual length of a7n and bn; join the jDoints P, 0, etc., thus obtaining thedevelopment of the outer boundary of the section. The laattern A^B^CDE^ of the base is obtainedfrom the plan in Fig. 238, while NMq.^p.,o., is a duplicate of the shaded part of the sectional vieWin the same figure.… … overlap put the mucilage which is to hold the model in shape. The faces will fold better if theBristol board is cut half way through on the folding edge. 397. For convenient reference the characteristic features of the Third Angle Method, all of whichhave now been fully illustrated, may thus be…
Mechanical drawing · Lettering
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