Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ..draughtsmen .. . ing its sides of the pre-scribed length. If we make the edge a b perpendicular to ^^s- profile plane, 01, the face v a b will then appear inprofile view as the straight line vb. Being a right pyra-mid, with a regular base, we shall find v, the plan of thevertex, equally distant from a, b and c; and v a, vb, vcfor the plans of the edges. Parallel to G. L. and at a distance apart equal to theassigned height, x, draw mv and no as upper and
Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ..draughtsmen .. . ing its sides of the pre-scribed length. If we make the edge a b perpendicular to ^^s- profile plane, 01, the face v a b will then appear inprofile view as the straight line vb. Being a right pyra-mid, with a regular base, we shall find v, the plan of thevertex, equally distant from a, b and c; and v a, vb, vcfor the plans of the edges. Parallel to G. L. and at a distance apart equal to theassigned height, x, draw mv and no as upper and lowerlimits of the front and side elevations; then, as the h. V. p. of a point are alwaj^s in the same perijendicu-lar to G. L., we project r, a, b and c to their respectivelevels by the construction lines shown, obtaining the front elevation. Projectors to the profile plane from the points of the plan give 1, 2, 3, which are then carried,in arcs about 0, to L, 5, 4, and i)rojected to their proper levels, giving the .s/V/e deration, vbc. As the actual length of an edge is not shown in either of the three views, we employ the fol-. Eig-. 233-
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Keywords: ., bookcentury1800, bookdecade1890, booksubjec, booksubjectlettering
