Kaleidoscope is a tube that has a system of mirrors inside. It is possible to multiply the pieces of coloured glass enclosed at the end of the tube by turning them and thus obtain various brightly colored shapes. The word "Praha" is engraved on the mantle of the kaleidoscope.
The invention of the Englishman Sir David Brewster from 1815 nowadays in concept design of a family business from Moravia.
