Liquid dispensing device

A liquid dispensing device comprising a cap structure adapted to be mounted on the top of a liquid container, a cylinder extending vertically upward from the cap structure, a manually operable plunger slidably fitted in the cylinder, means for controlling the stroke of the sliding movement of the plunger within the cylinder, a delivery assembly including a one-way delivery valve and a delivery nozzle, and a suction assembly including a one-way suction valve and a suction tube extending into the liquid in the liquid container, said delivery assembly and suction assembly being respectively removably force fitted into respective bores formed in the upper portion and the lower portion of the cap structure, said bores communicate with each other and with the interior of said cylinder, said stroke controlling means comprising a head of increased diameter formed on the upper end of the plunger for engaging with the upper end of the cylinder to prevent the downward movement of the plunger, a sleeve receiving the head of the plunger slidably therein, one or more gauge members being selected from a series of gauge members each having a predetermined thickness and being located and clamped between the head of the plunger and a cap member closing the upper end of the sleeve, and a projection formed on the inner periphery of the sleeve for cooperating with a stop member formed on the cylinder to restrict the upward movement of the sleeve relative to the cylinder.