9 Scientific, surveying, photographic, cinematographic, optical, weighing, measuring, signalling and regulating apparatus and instruments, namely, scales, and compasses, optical mirrors, surveying machines and instruments, photographic projectors and cameras, cinematographic cameras and projectors, weighing machines, instruments for measuring length and distance, rotating lights for use in signaling, signaling buoys, and microscopes; fire-extinguishing apparatus; magnifying glasses and lenses; vehicle warning triangles; time switches; spirit levels; safety vests, namely, life vests; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, plugs, adaptors, fuses, controls, mains lines, mains cables, wiring accessories, panels, transformers, extension cords with sockets, extension cords, coils, junction boxes, terminal strips, terminal blocks, flush-mounting boxes, sockets and electric connections, flush electric sockets, covers for electrical outlets, switches, moisture-proof switches, child safety devices for sockets in the nature of socket protectors, multi-outlet socket strips, extension cables, cable drums in the nature of cable modems; protective industrial boots and shoes; knee pads for workers for hand-crafted work to protect the knees; measuring tapes; electrodes for welding apparatus; magnetic strips, namely, blank magnetic computer tapes