Gramophone at first glance is a simple thing. You start the spring, the spring spins and twists the plate. The needle slides across the record and the membrane sings, says, plays. And the mouthpiece - to be stronger. Very simple, everyone knows that. The most important materials: thick cardboard, plywood, boards, nails, glue, a little paraffin or wax, two iron rods, several screws, etc. The book tells about the device of the gramophone and how to make it yourself from improvised materials at home.