Perspective pack : a tool-kit for artists : learn the secrets of perspective.
Smith, Ray,1949-Introduction to perspective.
[London] : Dorling Kindersley,
c1998.
Title taken from box.
Introduction to perspective / Ray Smith -- Pair of hinded rulers -- Two L-shaped framing cards -- Acetate drawing frame -- Two draughtsman's nets -- Squared paper -- Isometric paper -- Model of Escher's "impossible" triangle.