"A. 75x50 cm square plastic bar
B. Triangular prism 75 mm angles of 90?x45?x45?
C. Triangular prism 75 mm angles of 60?x60?x60?
D. Semi-circular bar 75 mm . in diameter
E. 2-sided convex lens, 75mm. Radius of 115 mm Curved faces.
F. 2-sided convex lens 75 mm long. Radius of 145 mm Curved faces.
G. 2-sided concave lens, 75 mm. long. Radius of 115 mm Curved faces."