... Handful operation Magnification 2step magnificationsEye piece 10×Total Magnification and Diameter of Visual Field(mm) 10×(φ18),16×(φ14.5) and16X(φ ... 11.25),25.6(φ9)Adjustable Range of Pupil Distance(mm) 55~82Adjustable Diopter ±5DSlit Width(mm ... 0~23°slit Inclination 5°,10°,15°,20° Light Spot Diameter(mm) φ9,φ8,φ5,φ3,φ2,φ1,φ0.2Filter ... Number 2Total Weight 40kg slit lamp microscope BL-III(A)