We are offering Auto Refractometer Measuring Range: Spherical, -20+20D(VD=12)0.125D steps, Cylinder -8+8D, 0.125D steps, Axis, 1180 degree 1 degree steps.Pupil Distance: 4585mm , 1mm steps Vertex Distance: 0mm, 12mm , 13.75mmMin.Pupil Size: 2.0mmChart: Auto fogDisplay: 5" CRT MonitorPrint: Thermal printerPower Supply: 100120v/200240v, 50/60HzWeight: 20kgDimensions: 484 X 282 X 440