Operation microscope 1.Common ophthalmic 2.suitable for mobile hospital. 3.Simple ... -step magnification.2).Spring banlance system of arm ensures the microscope move freely.3).All the lenses are multi-coated,mildewproof ... , φ31, φ21f300mmφ57, φ38, φ25f350mmφ67, φ44, φ30f400mmφ76 Operation microscope