Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 129
e through b is on bb produced. The distances to the right or left of MNequal those of the corresponding points on the plan from MN; thus oj equals oj, etc. 404. Changed planes of projections. In the problems of Arts. 399-403 the employment of anend ^-iew—which was simply an auxiliary elevation—has… … CHAXGIXG PROJECTION-PLANE EQUIVALENT TO ROTATING OBJECT. 149 (a). Rotation about a vertical axis, or its equivalent, a change in the vertical plane of projection.Result: second elevation derived from first plan and elevation. Let the axis be one of the vertical edges of the object, as that at d in…
Mechanical drawing · Lettering
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