Practical draughtsmen's work, with numerous engravings and diagrams (1903)
Hasluck, Paul N. (Paul Nooncree), 1854-1931, ed · Philadelphia, D. McKay · leaf 104
sed upon orthographic projection—that is, the rays of light proceeding from the outlines of theobject travel in parallel lines, and not in converging lines as inperspective. In this it very much resembles the angular pro-jection just illustrated, but it differs from that in having the PROJECTION.… … INS. 12 3 6 3 O NATURAL SCALEFig. 165.—Isometric Scale. true representation ; or, more accurately, the natural scale is tothe isometrical as 1 to y f or, roughly, as 11 to 9. In thismethod the object is supposed to be tilted up to show threefaces; or, taking a cube as best illustrating the…
Mechanical drawing
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