9 Amplifiers; Microscopes; Biological microscopes; Follow focus apparatus for adjusting camera lenses; Inspection mirrors; Lenses for microscopes; Magnifying glasses; Microscope objectives; Microscopes and parts thereof; Microscopes and parts thereof, namely, eyepieces and objective lenses; Optical inspection apparatus; Optical lens sights; Optical lenses made of glass, plastic and polycarbonate; Optical or telescopic lens sights; Pre-amplifiers