Leeds, Charles Carley, 1870- [from old catalog] · New York, D. Van Nostrand company · leaf 33
and it is absolutely essen-tial for one who wishes to become a good draftsman. The definition of the word projection (as applied to MechanicalDrawing), given in the Universal Dictionary of Mechanical Drawing by Prof. Geo. H. Follows, is: To throw forward in parallel rays orstraight lines.… … Plane B Projechon lines Fig. 18. In Mechanical Drawing these point for point with that of the bodyrays are called projection lines. Fig. 17 is an illustration of a V block shown in perspective, theend view of the block being projected upon the plane. Projectionlines are thrown out from the points…
Mechanical drawing
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