The macro zoom lens is unique in that it uses no eyepieces and provides a higher magnification, more working distance, and is less expensive than a metallurgical microscope.
This is Meiji short unimac macro zoom lens. It can be configured on many different types of stands or with a variety of illuminators. The camera mounts directly to the top with c-mount threads. The images are viewed directly on the monitor rather than through eyepieces.