Elementary projection drawing. Theory and practice. For preparatory and higher scientific schools, industrial and normal classes; and the self-instruction of teachers, inventors, draftsmen, and artisans. In six divisions .. (1880)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 123
d.—To find where a line, drawn through a given pointy■pierces the vertical plane. See Figs. 3 and 4. The explanation is entirely similar to thepreceding. The required point, c, being somewhere in the verticalplane, its horizontal projection, c, will be on the ground line. Itbeing also on the given… … Fia.8. Fig. 4 2d. Project this point into the vertical projection of the line.which will give if*=C, the vertical projection of the point, which isalso the [ nnf itself Example.—Here likewise, if bd be less than Id* the line willpierce the vei the ground line, that is in the vi cal plane extended…
Geometrical drawing · Mechanical drawing
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