FLUORESCENT RESEARCH MICROSCOPE - RAYSCOPE
RYS-102 FLUORESCENT RESEARCH MICROSCOPE
RYS-106-FL INVERTED FLUORESCENT RESEARCH MICROSCOPE
RYS-106-FL INVERTED FLUORESCENT RESEARCH MICROSCOPE
RYS-600-FL RESEARCH BIOLOGICAL FLUORESCENT MICROSCOPE
RYS-60-FL INVERTED FLUORESCENT RESEARCH MICROSCOPE