Abstract: A preset positioning device which is suitable for push-button tuners, and in particular for car radios.The device has a frame with a locator and a reference both mounted on the frame and both movable relative to the frame through respective ranges of corresponding positions. Means are provided for setting of the locator to a desired position. An actuator is operable either to move the reference to store a set position of the locator or to move the locator to take up a pre-set position stored by the reference.