Abstract: A device for discharging measured amounts of a plural-component material, such as an adhesive, filling, sealing or putty-like substance includes an axially extending casing having a first end. The interior of the casing is divided into separate compartments each having a discharge opening at the first end. A mixing chamber is positioned at the first end of the casing for receiving the components discharged from the compartments. A slide plate is positioned between the first end of the casing and the mixing chamber and is rotatable about the axis of the casing. The slide plate has openings for passageways alignable with the discharge openings for admitting selective amounts of the components into the mixing chamber.