A dispensing device for a fluid container, which includes a container cap, a switching nozzle, a securing mechanism and a dispensing compartment. The container cap has apertures, and the switching nozzle has a closing and an opening state. In the closing state the switching nozzle hermetically seals the apertures. An oval skirt is attached to the switching nozzle embracing the container cap, having protrusions for fixing the skirt to the container cap. Pressing the skirt releases the fixing and allows switching to an opening state. A setting mechanism determines the limited volume of the dispensing compartment and secures the volume from undesired variation. An annular portion has clefts and quantity markings. The setting mechanism encompasses the annular portion and has setting bumps bulging proximate to the annular portion, and barrel apertures. Upon mating the setting bumps with a cleft, a marking is exposed through the apertures.