9 Scientific, nautical, surveying and electric apparatus and instruments, namely electronic outlet covers; photographic, cinematographic, optical, weighing, measuring, signaling, life-saving and teaching apparatus and instruments, namely, cameras; audio tape recorders; magnetic data carriers, namely, magnetic coated cards, recording discs for musical sound; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculators, data processors, computers, unmounted photographic printers; fire extinguishers