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 519
ne ; the other is directly behind H, onthe back of the ellipsoid. Draw a fair curve through the pointsG, H, I, etc. To determine the points in the plan, draw contours torepresent the various levels of the H. planes in the elevation. Note.—It will facilitate the work if the H. traces in the 2 k 498… … Fig. 283. ca produced in n. With a as centre, and radius an, draw acircle. This circle is the contour of two of the H. planes: oneat the level of n in the upper part, and the other at n in thelower part of the ellipsoid. Draw, a projector from H till itmeets this circle in the points h, h, also…
Geometrical drawing
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