9 Viscosity meters; rheometers; scientific apparatus and instruments, namely, microscopes; nautical, surveying and electric apparatus and instruments, namely, sextants, surveying chains and electrical switches; electronic equipment, namely, circuit boards; electric switches; electronic apparatus and instruments, namely, computers; televisions; decoders for televisions; radios; combined radio and audio cassette recorders; radio transmitters; photographic, cinematographic, optical, weighing, measuring and signaling apparatus, namely, cameras, cinematographic cameras, spectacles, scales, calibrated rulers and railway signals; checking, inspection, emergency, life-saving and teaching apparatus, namely, graduation checkers, inspection mirrors, emergency flares, ring buoys for use in water rescue and medical teaching mannequins; automatic equipment, operated by coin or token, namely, coin changers; computer programs for managing databases, computers; printers for use with computers; electrical plugs and microprocessors for computers, modems, facsimile machines; telephones; fire extinguishers