Scientific, research, surveying, optical, measuring, signalling, detecting, testing and inspecting apparatus and instruments; Apparatus and instruments for recording, transmitting, reproducing or processing sound, images or data; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling the distribution or use of electricity; Electrical signalling, measuring, counting, recording and monitoring devices; Electric current collectors; Electric curr...

Metal pipe fittings consisting of couplings, joints, connectors, unions, adapters, and mechanical valves other than parts of machines; Manually operated metal valves, not being parts of machines; Metal tubing, metal elbows for pipes, metal tees for pipes, metal wye fittings for pipes, metal caps for pipes, and metal reducers for pipes