9 Physical, electric, electronic measuring, signalling, checking (supervision), control and monitoring equipment and apparatus, namely, sensor devices and electronic control devices for controlling, monitoring and regulating magnetic track brakes and eddy current brakes for rail vehicles; mechanically and/or pneumatically and/or hydraulically and/or electrically operated, controlled and controllable measuring, signalling, checking (supervision), regulating, conveying, storage, amplifying and monitoring equipment, apparatus and installations composed thereof, namely, pressure switches, pressure sensors, electronic, electro-pneumatic and electro-hydraulic control devices for monitoring, controlling and switching electric, hydraulic or pneumatic actuators for magnetic track brakes and eddy current brakes for rail vehicles; individual parts for the aforesaid equipment and apparatus, namely, control valves for regulating the flow of gases and liquids, namely, electro-pneumatic, pneumatic, hydraulic and electro-hydraulic valves, housings for control devices, electric cables, and sensors for measuring pressures and current; the aforesaid equipment, apparatus and installations being in particular for controlling, monitoring and regulating magnetic track brakes and eddy current brakes for rail vehicles, namely, magnetic track and eddy current brake controllers for rail vehicles; equipment, apparatus and installations composed thereof for monitoring rail vehicle brakes, parts of the aforesaid equipment and apparatus, namely, monitoring apparatus for monitoring the function and the performance of magnetic track brakes and eddy current brakes for rail vehicles and parts of the aforesaid equipment and apparatus