... magnificationsEye piece 10×Total Magnification and Diameter of Visual Field(mm) 10×(φ18),16×(φ14.5) and16X(φ11.25),25.6 ... (φ9)Adjustable Range of Pupil Distance(mm) 55~82Adjustable Diopter ±5DSlit Width(mm) 0-11 adjustableSlit Height(mm) 0-10 adjustableSlit ... ~23°slit Inclination 5°,10°,15°,20° Light Spot Diameter(mm) φ9,φ8,φ5,φ3,φ2,φ1,φ0.2Filter heat absortion,grey ...