Prism blocks all have a width of 25 mm.
The dimensions of the prism blocks:
Rectangle: 75 x 50 mm.
Semi-circle: 75 mm diameter.
Triangle: 60 x 60 x 60 mm, 58 mm side.
Triangle: 90 x 45 x 45 mm, 75 mm high.
Triangle: 90 x 60 x 30 mm, 75 mm high.
Bi-convex: 75mm long, curved faces 100mm radius.
Bi-concave: 75mm long and curved faces, 100mm radius.
