... ophthalmology and gynecology. Compared with normal operation microscope,TM-300F Portable opeation microscope has the larger range of functions and configurations ... with its features of easy-to-carry.2.Operation microscope Features and configuration: Objective Lens : f=200mm,300mm( ... 0.4, 0.6, 1, 1.6, 2.5xOperation microscope Specification :Obejective Lens: f=200mm (f=300mm is optional) ...