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 299
line cc at right angles to XY; and make c 7j below,and c 41 above XY. Draw a line below XY, and perpendicular to it. Measureoff d 3 below, and d 6 below XY. Problem 59. The projections of four points heing given, one in each dihedralangle, to find their distances from XY. Pigs. 79 and 80. Let A be… … Fig. 80. represent a side view of the H.P. and V.P. 0 is the positionof XY. Set off Oa from 0 (Fig. 80) equal to the distance a is belowXY (Fig. 79). At a erect a perpendicular aA equal to theheight of a above XY (Fig. 79). Draw a A parallel to the H.P.Join AO, which is the distance required.…
Geometrical drawing
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