Very clean Nikon Eclipse 50i Dual head Microscope with 4 Nikon CFI 10X/22 eyepieces with diopter adjustment. In excellent condition with sharp, clear, crisp, images with all 3 objectives. Some wear on the stage consistent with normal use. All components have been fully tested, cleaned and serviced (inside and out) by a Nikon factory trained microscope professional. All mechanical components function like new. Includes 2 Nikon C-TB binocular heads and a 6 position C-N Six position nosepiece with 3 Nikon CFI Plan infinity objectives ( 2X PLAN UW, 4X PLAN FLUOR, and 20X PLAN FLUOR). It has a Nikon Swing Out condenser with adjustable aperture, and a Nikon C-SRS right hand mechanical stage (no slide holder included). Nikon Y-THF Teaching Unit (face to face) with a LED pointer lamp with USB power source. It includes: bulb, power cord, built in in/out selectable Neutral Density filter, 45mm blue filter, and allen wrench tool. It also accepts many of the objectives and components used on the Nikon Ci microscopes. A recent CLIA Microscope Maintenance Certificate is also included.