When you watch movies on your new TV, everything onscreen appear real and not flat. That's 3D for you. In stereo microscopes, each eye view things from different angles as you would view the specimen from two independent compound microscopes that are set side by side and converging at an angle of 15 degrees.
To the uninformed eye, the industrial microscope pretty much looks like an ordinary microscope. It has the basic components and looks that make up the regular microscopes. The difference lay in the powerful configurations and lighting.