... ophthalmology and gynecology. Compared with normal operation microscope,OM-300FC Portable opeation microscope has the larger range ... / 18.5x OM300-3FC 3 steps magnification:0.6 , 1, 1.6x OM300-5FC 5 stepts magnification ... :0.4, 0.6, 1, 1.6, 2.5xSpecification :Binocular Tube: 45°or ... magnifcation changer Magnification factors: 0.4/0.6/1.0/1.6/2.5xMagnification : 3x/3.4x/7 ...