Detroit. Public schools. Dept. of instruction, teacher training and research. [from old catalog], Kepler, Frank Roy. [from old catalog] · Detroit · leaf 7
jectionswhen they have been brought into the same plane. Observethat the H and V projections of any given point on the piecelie in the same vertical line, and that the V and the P projec-tions lie in the same horizontal line. Third Angle:—The horizontal and vertical planes (consid-ered infinite in… … First angle when it is above H and in front of V.Second angle when it is above H and behind V.Third angle when it is below H and behind V.Fourth angle when it is below H and in front of V. 7 It is almost the universal practice in this country to use thethird angle since it affords a more convenient…
Projection
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