9 Measuring and signalling apparatus and instruments for measuring of speed, position and acceleration and signaling of the status of a component; apparatus and instruments for conducting, distributing, transforming, accumulating, regulating or controlling electricity; Data recording and analysis apparatus for machines and rail vehicles, in particular apparatus for determining temperature, speed, vibration and position; regulation elements for machines and rail vehicles, in particular sensors for determining temperature, speed, vibration and position; Apparatus for sensor and control systems, namely, sensors for drive control, sensors for condition monitoring; Sensors for traction control in land vehicles, sensors for automatic train safety in the nature of sensors and detector units for use in controlling the actuation and operation of train safety apparatus and equipment and sensors for wheel-slide control for trains during braking; Electronic speed regulators for the shunting and starting of heavy trains; Controls for energy recovery in braking processes; Electronic controls for inhibiting torsional vibrations in the drive train; Vehicle speed measuring devices, rolling distance measurement devices; Electronic controls for movement and position monitoring for vehicle and platform doors and for obstacle recognition; Rotary speed sensors for sensing toothed wheels; Rotary speed sensors for electrically conductive toothed wheels; High-resolution encoders for the traction performance of locomotives; Multi-channel encoders for the rolling stock industry; Absolute rotary encoders; Sensors for measuring speed, position, rotor position, vibration, temperature and inclination and electronic controls for wind power installations; Sensors in the form of encoders; Apparatus in the field of interpolation electronics for the evaluation of sinusoidal tensions, in particular for determining temperature, speed, vibration and position; Apparatus for recording, transmission or reproduction of sound or images; Magnetic data media, namely, blank magnetic data carriers; Data-processing equipment and computers; Microcontrollers; Electronic controllers for computer hardware, namely, bus controllers; Sensors as parts of machines for measuring speed, position, rotor position, vibration, temperature and inclination; Sensors for drives for use in shipbuilding for measuring speed, position, rotor position, vibration, temperature and inclination; Machine tools, namely, apparatus for electronic recording of speed and absolute position data; Drive systems, in particular electric actuators