Detroit. Public schools. Dept. of instruction, teacher training and research. [from old catalog], Kepler, Frank Roy. [from old catalog] · Detroit · leaf 5
or vertical. Theprojection of an object on the vertical plane oi projection isits vertical projection, b, h, k, c, Fig. 3. The projection onthe horizontal plane is its horizontal projection a, b, c, d. Pro-jections are named from the planes on which they are made. A plane of projection… … An auxiliary plane is frequently used to give a view of theexact shape and size of a surface that cannot be shown on thehorizontal, vertical, or profile planes. Views:—View in connection with working drawings meansa projection. The horizontal projection of an object is oftencalled the Top view or…
Projection
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