AmScope SM-2TZ Professional Trinocular Stereo Zoom Microscope, WH10x Eyepieces, 3.5X-90X Magnification, 0.7X-4.5X Zoom Objective, Upper and Lower Halogen Lighting, Pillar Stand, 110V-120V, Includes 0.5X and 2.0X Barlow Lenses

Great image quality. Well constructed. Adjustment controls are solid.But...Lights and light switches seem cheap, but are working fine.Not a true trinocular. There's a lever to switch from binocular to the vertical port.Seeing through the stereo eye pieces requires one's head to be in exactly the right place.AmScope doesn't ship a manual. You have to download it using a password that's hidden underneath the shipping label.I did not get exactly what was advertised. The vertical port does not have a c-mount. Its only a 23mm tube. When I talked to customer support they said that that part varies...