The invention relates to a method and device for the determination of the roll angle \u03c6 of a rotating body, such as a shell, utilizing sensors for the detection of rotation signals in a body-fixed coordinate system. Said central communication device selects an assigned communication unit and generates a data packet, which comprises the respective address information of the selected communication unit, said data packet being transmitted to the remote communication device. A digitizer is located on the liquid crystal panel. The first support portion may be located at one side end of the bottom portion and may face the bottom portion. All portions of a twofour-wheel drive switching device which portions are connected to a final reduction unit for front wheels are positioned below an upper surface of the device body.