OPHTHALMIC MOUNTINGS, SPECTACLE FRAMES, ACCESSORIES AND PARTS THEREFOR; OPHTHALMIC AND OPTICAL LENSES OF ALL KINDS GENERALLY AND THE BLANKS THEREFOR; OBJECTIVES; LENS SYSTEMS; CORRECTOR PLATES; OCCLUDERS; PRISMS; MIRRORS, REFLECTORS, AND FILTERS ASSOCIATED WITH OR FORMING A PART OF OPTICAL DEVICES; MAGNIFIERS; SUNGLASSES AND PARTS THEREFOR; HEAD AND EYE PROTECTIVE DEVICES INCLUDING HELMETS, SHIELDS, GOGGLES, AND EYE PROTECTORS, AND PLATES, LENSES, AND PARTS FOR SAID HELMETS, SHIELDS, GOGGLES AND EYE PROTECTORS; PROJECTORS, PARTS AND ACCESSORIES THEREFOR; CAMERAS, PARTS AND ACCESSORIES THEREFOR; EQUIPMENT AND DEVICES FOR EDITING MOTION PICTURE FILM, ACCESSORIES AND PARTS THEREFOR; CASES FOR SPECTACLES, LENSES AND VARIOUS INSTRUMENTS; DROP BALL TESTERS; GAUGES; FACE AND SPECTACLE FRAME MEASURING DEVICES AND LIKE DEVICES USED IN PRESCRIBING AND/OR FITTING SPECTACLE FRAMES TO THE FACIAL REQUIREMENTS OF WEARERS, SUCH AS NOSE GAUGES, FACE MEASURES, TEMPLE MEASURES AND THE LIKE; EYE TESTING, MEASURING AND OBSERVING DEVICES, ACCESSORIES AND PARTS THEREFOR; LENS TESTING, LENS CENTERING, LENS INSPECTING AND LENS MEASURING DEVICES, ACCESSORIES AND PARTS THEREFOR; TRIAL LENS SETS, THE CASES AND LENSES THEREFOR; INSTRUMENTS PROVIDED WITH LENSES FOR TESTING AND EXAMINING THE EYE AND OTHER OBJECTS; BALLISTIC SCIENTIFIC AND BALLISTIC LABORATORY APPARATUS, ACCESSORIES AND PARTS THEREFOR; REFRACTING INSTRUMENTS AND PARTS THEREFOR; TANGENT SCREENS; REFRACTOMETERS AND PARTS THEREFOR; MICROFILM READERS, ACCESSORIES, AND PARTS THEREFOR; ILLUMINATORS; INSTRUMENTS FOR MEASURING OPTICAL PROPERTIES, ACCESSORIES AND PARTS THEREFOR; MICROSCOPES, ACCESSORIES AND PARTS THEREFOR; DEVICES SUCH AS PERISCOPES; STEREOSCOPES; LOUPES, COLONY COUNTERS; CAMERA LUCIDAS; COLORIMETERS; PROFILE COMPARATORS; MICROSCOPE ILLUMINATORS; FINGERPRINT MAGNIFIERS; GONIOMETERS; HAEMACYTOMETERS; HEMOGLOBINOMETERS; HARDNESS TESTERS; MICROMETERS; MICROTOMES; MICROTOME KNIVES; PHOTOMICROGRAPHIC APPARATUS; LIGHT POLARIZING APPARATUS AND DEVICES; SPECTROMETERS; OPTICAL INSTRUMENTS FOR EXAMINING AND COUNTING PARTICLES IN BLOOD, URINE, MILK AND MOLD; PERIMETERS; POLARISCOPES; MICROSCOPIC DRAWING APPARATUS; MICROSCOPE OBJECT SLIDES; MICROSCOPE COVER GLASSES; MICROSCOPE SLIDE RECEPTACLES AND HOLDERS; LABORATORY INCUBATORS; BALANCES; HELIXOMETERS; NEPHELOMETERS; RANGE FINDING APPARATUS; SPECTROGRAPHS; SPECTROSCOPES; SPECTROPHOTOMETERS; SURVEYING LEVELS; TELESCOPES; ORTHOPTIC DEVICES; METALLOGRAPHS; AND ACCESSORIES AND PARTS FOR SUCH DEVICES