Abstract: A bathroom scale has a measurement value sensor which generates a measurement signal when a person wishing to be weighed stands on the scale. The measurement signal is transmitted to an evaluation circuit which reduces therefrom the weight and displays it on a display device. The evaluation circuit and the display device are supplied with electric energy by a generator upon which the weight of the person wishing to be weighed is applied. The actuation element for the generator is designed as a plunger which drives the generator by means of a toothed rack and pinion and projects over the plate in such a way that it can be actuated independently of the same. The restoring spring acts between the plate and the toothed rack and pinion.