Auto Refractometer With Keratometer Optometry Machines FA-6100   Measuring Range Spherical -20~ 20D(VD=12)0.125Dsteps Cylinder -8~ 8D 0.125D steps Axis 0°~180°,1°steps Pupil Distance 45~85mm,1mm steps Vertex Distance 0mm,12mm,13.75mm Min.Pupil Size Ø2.0mm Chart Auto fog Display 5.6″CRT Monitor Print Thermal Printer Power Supply 90V~264V,50/60Hz,60VA Dimensions 540*280*510mm Weight~20kg   Measurement mode Cornea/ refractometry measurement mode keratometry/refractometry Refractometry measurement mode refractometry Mode of keratometry keratometry Mode of CLBC Substrate curvature of contact lens Refractometry Vertex Distance 0, 12, 13.75mm Spherical degree -20.00D~ 20.00D (VD=12mm, 0.125D) Cylinder degree -8.00D~ 8D (0.125D) Axial 1~180 °(step 1°) Cylinder Symbol – , , /- Pupil Distance 45mm~85mm (1mm) Minimum pupil diameter 2.0mm Measuring time 0.07S Keratometry Radius of curvature 5.0mm ~10.0mm (increments: 0.01mm) Corneal refractometry 33.00D ~ 67.50D Corneal astigmatism 0.00D ~ 8.00D ( 0.12D, 0.25D ) Axis 1~180 °(increments: 1°) Others Printer Thermal printer Chart Follow up colorful fogging chart system Monitors 5.6 inch TFT LCD Power Supply AC 100V~240V, 50/60Hz / 60VA Machine weight 20KGS Machine dimension 460*400*360mm Package dimension 680*660*530mm