J-300 inverted metallurgical microscope ,imaging clearly, wide field of vision J-300,The whole ... Basic Parameters:1)Magnification:100X-1250X2)Eyepieces tube:Push-pull trinocular head,inclined at 30 degree.,interpupillary 55-75mm.3)Eyepieces ... Lamp,6V/20W,brightness adjustable10)Power:transformer,220V J-300 Inverted metallurgical microscope