J-300 inverted metallurgical microscope ,imaging clearly, wide field of vision J-300,The whole ... -pull trinocular head,inclined at 30 degree.,interpupillary 55-75mm.3)Eyepieces:Wide field WF10X/18mm, WF12.5X15mm4)Objectives:Special use metallurgical ... ,6V/20W,brightness adjustable10)Power:transformer,220V J-300 Inverted metallurgical microscope