Applied perspective, for architects and painters (1901)
Longfellow, William Pitt Preble, 1836-1913 · Boston and New York, Houghton, Mifflin and company · leaf 33
dis-tances from it equal to the length of the Axis, or as far from it as .S is. Any line that vanishes in them is a Diagonal, and will cut off on any Perpendicularand Horizontal that it crosses equal distances from the intersection of these. Note. In measuring by Diagonals we must be sure that the… … DISTANCE POINTS 13 requires that they be in the same plane, which is secured by drawing them from points in thesame horizontal line, — the Ground Line for instance,—or such a line as we use in Fig. 8,which we may call a Hue of measures. This line is the trace of the plane of the measuringlines and…
Perspective
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