Barometers, ammeters, equipment (apparatus) for testing gases, calipers, electronic-based instruments for measuring environmental parameters including humidity, thermometers, voltmeters, microscopes, magnifying glasses, telescopes, periscopes; apparatus for recording, transmission or reproduction of sound and images, radios, television receivers, video tape and video disk players, cameras, audio devices and parts, namely, audio cassette players, audio cassette recorders, cinematographic machi...