A socket has a housing for memory card such as MS card, SD card and MMC card, SM card. Pressure measurement signals at said sensors are fed to electronic circuitry within the aircraft for generating magnitude and frequency signals reflective of the side-slip that are applied to a pair of vibrators respectively mounted on the undersides of a pair of pilot foot pedals located within the cockpit. The top layer and bottom layer are attached to one another. In one region permeated by the magnetic flux in a position of normal use, the armature part has at least one opening in which a ferromagnetic flux-guide member is located. The wagers are then resolved based on each roll of the dice.