Hasluck, Paul N. (Paul Nooncree), 1854-1931 · London ; New York : Cassell and Co. · leaf 74
er a square is drawn and a circle inscribed ; the diagonals of the square are then drawn, and where they cut the circle other lines parallel with the sides are drawn. Parallel with two of the sides a line is drawn to represent the transparent plane or surface which is to receive the picture, and… … the spectator’s eye directly over the point of sight in the plan. Lines or rays are then drawn from certain of the points on the boundary of the square to the points of sight, and where the eleva- tion rays cut the transparent plane, horizontal lines are projected, and the lowest of these…
Mechanical drawing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
