It can be used to measure the radius of cornea'scurvature
and dioptor.And it can also be to measure the axis and
dioptor of cornea astigmatism.

Product Parameters
Measurement Range Curvature Radius:5.5-11mm Dioptor:31-61D
Minimum Division: Radius:0.02mm,Dioptor:0.25D
Minimum Surface Required for Measurement:
R=5.5mm φ1.65mm,R=7.5mm φ2.36mm,
R=11mm φ3.36mm
Whole Packing Volume:0.235m^3
Carton Number:2
Total Weight:38kg