Nikon Eclipse E800 Microscope Built In Filter Set Module ND2 ND8 ND32 D GIF

Nikon Fluorescence Eclipse E800 Microscope Shutter Slide

Nikon Eclipse E800 Microscope Fluorescence Optics Mount with Dichroic Mirror

Nikon Fluorescence Eclipse E800 Microscope Field Diaphragm

Nikon T1-SNCP Phase Contrast Ring Slider

Thorlabs ID12 Adjustable Iris Diaphragm Optical Aperture Lever Actuated

Bird 8400 Exhalation Valve Diaphragm