Instrument is a disc connected to a cylindrical handle. The disc has a half moon plate on the top which has the manufacture name. The disc has a main rotating disc that is activated by turning it from the outer edge. A second disc in front is activated by a lever. Both rotating discs have lenses in them. The handle has a threaded collar on the top, held in with a screw. At the bottom of the handle is a double power cord. The cords are red and green and other end in a single plug.