Crawshaw, Fred D. (Fred Duane), b. 1874, Phillips, J. D. (James David), 1869- joint author · Chicago, New York, Scott, Foresman and company · leaf 38
4i- Fig. 22. Scale of Levels 2. In general, equal vertical distances are equal in perspectiveonly when measured on the same vertical edge. Example:AB = BK = KL. PERSPECTIVE SKETCHING 33 … 34 MECHANICAL DRAWING Horizontal Measurements. Under, Horizontal Lengths inPerspective, page 12, the general facts regarding horizontalmeasurements are given. In making horizontal measurements inperspective the following method should be used: Whenever possible, horizontal distances on an object…
Mechanical drawing
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