Ammeters; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electric current; Conductors, electric; Connections, electric; Contacts, electric; Electric connections and connectors; Electric relays; Electrical plugs and sockets; Pressure transducers and transmitters that convert hydraulic or pneumatic pressure into analog electrical signals for monitoring and controlling hydraulic or pneumatic systems; Switches,...