Elementary perspective arranged to meet the requirements of architects, draughtmen, and students (1913)
Crosskey, Lewes R · London, Backie and son ltd · leaf 130
nd the horizon. The instrument can be set so that it canbe worked either to the left or the right, but it cannot be set for both directions forthe same drawing. So that if there is more than one vanishing point outside of theboard another centrolinead will have to be used. The centrolinead cannot… … Pig. 5. A T-square with a segmental head (fig. 5) is also used for working with distantvanishing points. Outside of the drawing, fix on the board a cardboard arc whosecentre is the V.P., and fasten the concave cutting to a T-square or straight-edge.The position of the cardboard arc on the board is…
Perspective
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