optical instruments and parts thereof, namely, lenses, telescopes, binoculars, small telescopes, observation telescopes, telescopic sights, riflesscopes, sights for bows, sights for crossbows, collimators and test telescopes, magnifying glasses, loupes, eyepieces, telemicroscopes, and analytical measuring devices, namely, refractometers, polarimeters, spectrometers, samplers for gas chromatographs, lamps, lights, projectors