Boxed set of high quality prisms, made from clear acrylic sheet, with all sides polished. The set consists of six prisms in a variety of shapes, and an activity guide.

Contents:
1  Rectangular block, 75mm x 50mm x 15mm
1  Semi-circle, 90mm base x 15mm thick
1  Equilateral prism, 75mm sides, 15mm thick
1  Double convex lens, 90mm long, 23mm at center
2  Double concave lens, 90mm long, 10mm at center