XJL-17AT Inverted metallurgical microscope is equipped excellent plan achromatic objectives and wide field eyepieces, the illumination mode Is Kohler, so that the field is very uniformity. The instrument is designed very compact in structure, to make the operation easiy and comfortable. This is ideal optical instrument for micro observation in metallographic structure and surface morphology. It is suitable for research in metallography, mineralogy, precision engineering, etc.