Optical and electro-optical measuring devices and components thereof, namely, optical gauges in the nature of an optical sensor, interferometers, prisms, optical flats used to test the flatness of glass or metal surfaces, mirrors, beam splitters in the nature of an optical device that can split a laser beam into two or more beams, optical windows in the nature of a flat optically transparent plate used as a protective barrier for electronic sensors, retroflectors in the nature of optical reflectors, beam expanders in the nature of an optical device used for expanding the size of a laser beam, lasers, laser tubes, laser amplifier slabs, lenses, transmission spheres being parts of interferometers, transmission flats being parts of interferometers, reference flats used to test the flatness of glass or metal surfaces, attenuation filters, mirror mounts in the nature of a device used in optical research that securely holds a mirror in place, and optical-mechanical assemblies in the nature of electronic devices comprised of lenses and beam expanders; interferometers; optical profilers; metrology systems comprised of a light source, one or more cameras and sensors in communication with computer software and hardware and replacement parts therefor

Engineering design services; Product development; Design and engineering services in the field of metrology and optics