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 29
se points for the ruler torest against when drawing lines from the pointsof sight or distance. The T square and the smooth edges of thedrawing-board will enable the learner to pro-duce perpendicular lines with great facility;but it is proper that he should be able to raisea perpendicular line… … MANUAL OF PERSPECTIVE. 27 points at equal distances from it on the line;mark those points b and c. Remove the sharppoint of the compasses to b, and extend thepencil point to c; then draw the curvedline c d ; reverse the legs of the compasses,placing the sharp point on c and the pencilon b ; draw…
Perspective
Internet Archive · Getty Research Institute · Public Domain Mark 1.0. Free to use for anything.
