XJL-302/XJL-302BD upright metallurgical microscope is suitable to observe surfaces of opaque object.It is equipped excellent UIS optical system and modularization function design so that update system expedientlyand achieved polarization, dark field observation. Compact and steady main frame body is embodiment for the shockresistance. The ideal ergonomic design is adopted in this unit and has easier operation and wider space. This is ideal optical instrument for micro observation in metallographic structure and surface morphology. It issuitable for research in metallography, mineralogy, precision engineering, etc.