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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; apparatus for recording, transmission or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
optical and electro-optical measuring devices and components thereof, namely, optical gauges, interferometers, prisms, optical flats, optical mirrors, beam splitters for splitting light from a laser into multiple paths, optical windows, optical retroflectors, beam expanders in the nature of an optical device used for expanding the size of a laser beam, optical laser amplifier optics, lasers being part of optical and electro-optical measuring devices, laser tubes being part of optical and electro-optical measuring devices, laser amplifier slabs being part of optical and electro-optical measuring devices, optical lenses, transmission spheres for measuring the surface quality or transmitted wavefront of concave or convex surfaces or optics, transmission flats for measuring the surface quality or transmitted wavefront of flat optical components and assemblies, reference flats used to test the flatness of surfaces, optical attenuation filters, optical mirror mounts, and optical-mechanical assemblies; interferometers; optical profilers; metrology systems comprised of a light source, one or more cameras and sensors in communication with external computer software and hardware goods and replacement parts therefor