Scientific, research, navigation, surveying, photographic, cinematographic, audiovisual, optical, weighing, measuring, signaling, detecting, testing, inspecting, lifesaving and teaching apparatus and instruments, namely, microscopes; optical apparatus and instruments, namely, optical apparatus and instruments not comprising LED as light source in the nature of spectrometers or spectrographs and optical instruments comprising a laser as a light source in the nature of Raman microscopes; diffra...