Spiers, Richard Phené, 1838-1916 · London : Cassell · leaf 46
quently previously inked-in, no alteration is made on them, and the architect deceives not only the public, but himself, as to the ultimate effect of his design. 55. It is generally possible to arrange that one vanishing-point at least should be included on the board or close to it in every… … es = aes: | ei ee 8 called a Centrolinead. The Centrolinead is an instrument consisting of one long arm, x x (woodeut No. I.), which serves as the straight-edge, and two others, y, Z, which are attached to the long arm by screws working in slots; these slots allow the short arms to be fixed at any…
Architectural drawing
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