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 141
,,- Take a reference plane MN through s and as in Art. 397 (b) construct anauxiliary elevation on 71/iV, transferring it sothat it is seen as a perpendicular to o/, thus obtainingthe same view of the prisms as would be had if lookingin the direction of the arrow. To construct this make o fequal to…
Mechanical drawing · Lettering
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