Wallis, Rolland S. [from old catalog], Iowa state college of agriculture and mechanic arts, Ames. Dept. of engineering extension. [from old catalog] · Ames, Iowa, Engineering extension department, Iowa state college · leaf 43
/ , 1 , / 1 1 1 1 / 1 1 1 , 1 i 1 1 1 1 1 1 1 r i 1 1 1 1 1 1 1 / / 1 1 1 1 1 1 i h s-Projected Outline --Picture Plane Fig. 52.—Dissimilar objects giving identical projections. Orthographic Projection.—If the observer is considered as havingmoved an infinite distance away from the plane and the… … \ \V i i—- — — 1 J 11 Si Top 1 1 1 ii 1 111 J -- s^- u LFT En D. s/<* Front <s- IGHT E ND 4 -> Transparent Box Openedv l_ c* (b) Bottom Fig. 53.—Theory of orthographic projection. When projecting- lines are parallel to each other, and also perpen-dicular to the picture plane, the…
Mechanical drawing
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