... .Eyepieces:12.5/18.5x ............... Operating Microscope TM-300F1.Appliction and Features TM-300F Portable operation Microscope is applicable for diagnosis ... Surgery,ophthalmology and gynecology. Compared with normal operation microscope,TM-300FC Portable opeation microscope has the larger range of functions ... 300mm(Lens-changer) Eye piece : 12.5x / 18.5x TM-300F 5 stepts magnification:0.4, 0.6, 1, 1 ...