Nikon Microscope ND16 Neutral Density 16 Epi-Illuminator Labophot Optiphot

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Nikon ND16 Microscope Filter Slider

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NIKON ND32 NEUTRAL DENSITY MICROSCOPE FILTER SLIDER FOR LABOPHOT & OPTIPHOT

Nikon ND32 Filter Slider for Epi Illuminator Optiphot Microscope