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 170
on. As in other pro-jections, the conventional direction for the light is that Arof the bodj-diagonal of the oblique cube. The edges todraw in shade lines are obvious on inspection. (Fig. 412). 651. An interesting application of oblique projection,earlier mentioned, is in the drawing of crystals.… … 250 THEORETICAL AND PRACTICAL GRAPHICS. 00 : n: 1; that is, each face is parallel to one axis, cuts another at a units distance, and the third at some multiple of the unit. The three axes in this system are equal, and mutually per-pendicular; but their projected lengths are aa, bb, cc. The…
Mechanical drawing · Lettering
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