Feathers of ARK-800 Auto Refractometer 
1.Measured more quickly because the Technology of Buile-in Micro process and quick graphic process. 
2.Quick measurement for diopter of MIN.pupil size 
3.New design of colorful screen(5.7" TFT LCD) 
4.Auto fog chart 
5.Pupil distance auto measured available 
6.Choice for vertex distance 
7.Ability of auto-measurement after align and focus 

Refractometer	Vetex Distance(vd)	0.0,12.0,13.75mm
	Sphere Power (SPH)	-20.00～+20.00D (In case of VD=12mm)
	Cylinder Power(CYL)	0.00～±10.00D(0.12/0.25D Unit)
	Axis(AX)	1～180°(1° Unit)
	Cylinder Form	-,+,MIX
	Pupil Distance(PD)	10～80mm
	Minimum Pupil Diameter	￠2.0mm
Keratometry	Radius of Curvature	5.0～10.2mm(Increments:0.01mm)
	Corneal Power	33.00～67.50D(when corner equivalent Refractive index is 1.337; 0.05/0.12/0.25D unit) (Increments selectable from 0.12,0.25D)
	Corneal astigmatism	0.0～-15.00D (Increments selectable from 0.12,0.25D)
	Axis	1～180°(Increments:1°)
	Corneal Diameter	2.0～14.0mm(Increments:0.1mm)
	Memory of Data	10 measure value for each right and left eye
	Internal Printer	Uses thermal line printer
	Monitor	5.7-inch color TFT LCD monitor
Environmental requirements	Operation	Temperature:+10 to +35℃ Humidity:30 to 75﹪ RH Atmospheric pressure:800～1060 hPa
	Storage	Temperature:-10 to +55℃ Humidity:30 to 75﹪ RH Atmospheric pressure:700～1060 hPa
	Transportation	Temperature:-20 to +70℃ Humidity:10 to 95﹪ RH Atmospheric pressure:500～1060 hPa
	Power supply	AC100-240v,50/60Hz
	Power consumption	Approximately 100VA
	Size	484(L)×282(W)×440(H)mm
	Weight	Approximately 17kg