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 139
y the edges a, b, e and d of the hori-n, m, I, p, q, r—aird project to the elevations of the sameedge a a meets the other prism at o and h, Avhich projecto and h. Similarly for the remaining points. The development of the vertical prism is shown in the shaded rectangle IJ, of length Sgri…
Mechanical drawing · Lettering
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