It is provided 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 state and an opening state, wherein in the closing state the switching nozzle hermetically sealing 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. The dispensing compartment includes an annular portion, a setting mechanism, and a cover mechanism. The setting mechanism determines the limited volume of the dispensing compartment and secures the limited volume from undesired variation. The annular portion has a plurality of clefts and an associated plurality of 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 associated with the certain t structural deviation is exposed though the apertures. The cover mechanism complements enclosing of the limited volume of the dispensing compartment, and has child-proof closing mechanism.