A well made working model of a hydro electric power station.
It is mounted on a plastic base 270 x 240mm and has a turbine which has a transparent cover so that it’s interior can be viewed. Water is fed in an inlet tube which rotates the turbine blades and then passes out through an outlet tube.
Also mounted on the base is a generator which is belt driven from the turbine.
This powers either a torch bulb or a miniature Newton’s Colour Disc by switching the power with a knife switch.