Barometers, light meters, observation instruments, spectacles, spectacle cases, spectacle frames, spectacle lenses, chromatography apparatus for laboratory use, chronographs (time-recording devices), field glasses, binoculars, telescopes, cameras for photography, frequency meters, hydrometers, altimeters, hygrometers, checking (supervision) apparatus (electric), magnifying glasses (optics), manometers, meters, microphones, micrometers, microscopes, instruments for navigation, lenses (optics), optical goods, optical lenses, optical apparatus and instruments, optical lamps, prisms (optics), radar apparatus, projection apparatus, sonars, sunglasses, spectacles for sports, stereoscopes, tachometers, metronomes, telescopes, enlargers (photography), lens hoods (optics)
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