Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 301
rtical trace. Fig. 82 represents the co-ordinate planes opened out into a b c / ^ c <l \ a b c d Fig. 82. one flat surface. The projections below XY represent the plansof the lines, and those above XY the elevations. We will now use the same piece of cardboard to illustratethe projections of… … Fig. 83. Let the edge AB represent the line to be projected. ccB isits horizontal, and ab its vertical projections. Then incline it to the H.P., with one of its shorter edges stillon the H.P., but perpendicular to the V.P. Let CD represent the line to be projected. The line Dc isthe horizontal, and…
Geometrical drawing
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