Classic set. Demonstration model with magnetic components. A range of backgrounds (also magnetic) are included, to quickly create models of telescopes, the eye, with or without glasses, and so forth. The set comprises 8 lenses, 3 types of mirror, rectangular and triangular prisms and a model of an optical fibre. A white board (with steel backing) for mounting the components is included. 288790 Laser ray box is a perfect accompaniment to this set.