9 Scientific, surveying, electrical, photographic, film, optical, weighing, measuring, signaling, controller apparatus and instruments, namely, magnetic compasses, Surveyors levels, cameras, eyeglasses, scales and balances; electronic devices for recording, transmitting and reproducing images and sound, namely, audio tape recorders, digital video recorders, DVD recording apparatus; magnetic, optical or other data media, namely, blank optical disk, blank magnetic data carriers, data processing devices, namely, computers; testing apparatus and instruments, namely, circuit testers, diesel oil emission testers, fuel pump testers; cables, namely, electric cables, Ethernet cables, extension cables, fiber optic cables; wires, namely, electric wires, power wires; conductors, namely, electrical conductors, electronic semi-conductors; switches, namely, electric switches, Ethernet switches; pressure switches for agricultural equipment; fuses; electrical plugs, plug adaptors; thermostats; measuring apparatus, namely, laser measuring systems, bevels; sensors, namely, liquid level sensors, oil level sensors, pressure sensors; transformers: tachometers; diagnostic devices for measuring, signaling and inspection for use in agricultural machinery in the nature of displayed devices arid operating devices, namely, plasma display panels, liquid crystal displays; electric armatures, operating boxes containing electrical, electronic or mechanical operating elements, namely, electric fuse boxes, switch boxes; computer programs for use in database management, use as a spreadsheet, and for word processing; computer software for use in database management, use as a spreadsheet, and for word processing