Abstract: A measuring device for an apparatus for measuring and delivering predetermined quantities of liquid, for example quantities of water, comprises a measuring vessel, to which a liquid supply pipe and a liquid discharge pipe are connected, measuring apparatus being mounted in the measuring vessel, which measuring apparatus serve for measuring a fixed quantity of liquid in the measuring vessel and for controlling the liquid supply to and the liquid discharge from the measuring vessel and the measuring apparatus further causes the liquid supply pipe to close and the liquid discharge pipe to open when a set residual quantity of liquid is supplied in the measuring vessel.