Check the listing for details. 7" Touch Screen Auto-Refractor Keratometer Refurbished Refractometer RFK-960. Condition: Seller refurbished. Listed at 11655.00 USD. Auto Ref-Keratometer (Model: RFK-960) The new RFK-960 represents Lunar Health latest generation of automated technology Main Features New optical system, unique imaging impression Hartman imaging analyzing and processing technology, accurate measurement result TFT touch screen, can move front and back freely Motorized chinrest Auto paper-cutting printer Auto tracking and focusing during measuring Technical Parameters RFK-960 SpecialAuto tracking and focusing during measuringVertex Distance(VD)0.0, 12.0, 13.75, 15.0SPH-30.000−+25.000(VD=12mm,0.01,0.06,0.12,0.25unit)CYL0.00~±10.000(0.06, 0.12,0.25 Unit)Axis(AX)1°~180°(1°unit)Cylinder Form-,+,±Puiple Distance(PD)10- 86mmMinimum Pupil Diameter2.0mmMeasuring Time