... '' LCD colorful display 2.faster and accurate measurement 3.top-grade,CE,ISO, FDA 4.NEW model V-815 auto refractometer with LCD colurful display ... Distance45~85mm,1mm stepsVertex Distance0mm,12mm,13.75mmMin.Pupil SizeØ2.0mmChartAuto fogDisplay7"color LCDPrintThermal PrinterPower Supply100~120v/200~240v,50 ...