Life-saving and teaching apparatus and instruments, namely, fire extinguishers, and ear plugs not for medical purposes; blank magnetic data carriers, blank compact discs, blank cassette tapes, blank video tapes; audio and video tape recorders; exposed cinematographic film, cinematographic film splicers and editors, film development tanks and reels, film development dryers, photo scanners, photo enlargers, cameras, video cameras, digital cameras, lens for cameras; telephones, cellular telephones, pagers, answering machines, fax machines, photo copiers, calculators; laboratory equipment and supplies namely, test tubes, glass tubes for scientific purposes; theodolites; weighing scales, letter scales; access control and alarm monitoring systems; electric soldering irons; x-ray machines not for medical use, exposed x-ray film not for medical use, x-ray tubes not for medical use; protractors, tape measurers, tape rulers; vending machines; cash registers; computers