... 1. Auto Refractometer 2. Auto Fog Chart 3. 5.7" LCD Monitor Screen 4. Auto/Manual Focus 5. Built-in Thermal Printer Auto Refractometer RM- ... .4,5.7"LCD color display.5,Pupil distance auto measured available.6,New compact design enchances patient interaction ... connection with external machines,such as computerized vision tester and auto projector.Specifications:Measurement Range Sphere -20D~+20D (VD=12mm ...