Ophthalmic Operating Microscope 1.Binocular tube, for one men. 2.3 steps 3.With controlled pedal 4.Germany optical lenses ... Specifications: Eyepiece Magnification12.5×Objective Focusf=200Working Distance190mmMagnification for Main Microscope5.3×,8×,12× stepsDiameter of FieldF37mm,F25mm,F16.7mmDiopter ... .24m3,1 cartonTotal Weight51kg Ophthalmic Operating Microscope,3 steps, for one men (YZ20P6)