Astronometric measuring machines and instruments; Binoculars; Biological microscopes; Cover glass for microscope slides; Distance measuring apparatus; Lenses for astrophotography; Microscopes; Oculars; Reflectors for telescopes; Sighting telescopes for firearms; Telemeters; Telescopes; Telescopic sights; Telescopic sights for artillery; Astronomical spectrographs; Microscope objectives; Microscopes and their parts; Optical character recognition apparatus; Optical inspection apparatus; Reflect...