Chemicals used in industry, science and photography; chemical preparations for absorbing light; light absorbing chemical preparations

Scientific, nautical, surveying, photographic, optical, weighing, measuring, signalling, checking in the nature of supervision, and teaching apparatus and instruments, namely, binoculars, optical cameras, collimators, image intensifiers, infrared and ultraviolet cameras and sensors, interferometers, microbolometers, microscopes, monochromators, periscopes, photometers, pyrometers, refractometers, spectrometers, telescopes, thermal cameras and thermopiles; calibration devices for calibrating optical cameras, collimators, infrared and ultraviolet cameras and sensors, night vision devices and thermal cameras; calibration checkers; optical lenses, optical enhancers in the nature of optical lenses; optical filters; optical scanners; optical transceivers; optical transmitters; laboratory optical apparatus, namely, cameras, collimators, infrared and ultraviolet cameras and sensors, interferometers, microscopes, monochromators, refractometers, spectrometers, telescopes; optical apparatus and instruments, namely, binoculars, optical cameras, collimators, image intensifiers, interferometers, microscopes, monochromators, photometers, refractometers, telescopes; optical sensors; and computer hardware; apparatus and devices for laboratory purposes and for use in the chemical industry and for establishing the properties of materials, namely, spectrometers; structural replacement parts for all the aforesaid goods