A new manual of perspective: containing remarks on the theory of the art, and its practical application in the procudtion of drawings ... Illustrated by numerous engravings (1849)
Whittock, Nathaniel · London, A. Hall & Co. · leaf 78
ough the intersection of the diagonal lines,and it will divide the square in the centre. Placeone leg of the compasses on the lower end ofthis short upright line, and with the pencil leg MANUAL OF PERSPECTIVE. 75 draw a semicircle, which will cross or intersectthe diagonal lines. At these… … across the perpendicular lines raised from theground plan, the number of squares will begiven. It will be necessary to find the per-spective centre of these squares, by drawingdiagonal lines from their angles ; where thediagonals intersect, will be the centre. Drawa short upright line through each…
Perspective
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