Applied perspective, for architects and painters (1901)
Longfellow, William Pitt Preble, 1836-1913 · Boston and New York, Houghton, Mifflin and company · leaf 52
ecting that into GG,after drawing eVio measure off ea on it at a by the measuring line aM. This problem, like that of the plinth block (Fig. 24), may be easily solved by thenatural method of visual projection. We may project a, b, c, and d in theplan byvisual lines upon PP and plumb down from them… … Fig,. So the other. But a method of finding the point a by measuring from a point 6, whichis not in the line of measures eb (here the Ground Line) but is projected upon it, isimportant. It often happens that we need to measure off a given distance on a linewhose trace we cannot reach. Suppose, for…
Perspective
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