Industrial drawing and geometry; an introduction to various branches of technical drawing (1911)
Spooner, Henry John, 1856- · London, New York [etc.] Longmans, Green, and co. · leaf 126
ing the part of theback that is unseen, as shown. Note.—The figure abcd, etc. (part of the new elevation),is an ellipse, and is perfectly symmetrical about centre linesparallel and perpendicular to X,Y,. Of course, when a circle isinclined to the plane of projection, its projection is always… … Fig. 316 -Use of preliminary or auxiliaryelevation. Fig. 317.—Cone lying on its side. the side ac, and project the plan of the circular base (as in the previousproblem), which will be an ellipse, and having found a, the plan of the apex, draw from it tangents to the ellipse, and the plan…
Mechanical drawing · Geometrical drawing
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