Name: Keratometer
Model: YZ38
Features: It can be used to measure the radius of cornea's curvature and dioptor. And it can also be to measure the axis and dioptor of cornea astigmatism. 
Specification: 
1.Measurement Range Curvature Radius: 5.5~11mm 
2.Dioptor: 30~60D 
3.Minimum Division: Radius: 0.02mm, Dioptor: 0.25D 
4.Minimum Surface Required for R=7.5Mmm Φ2.36mm, 
5.Measurement R=5.5 Φ1.65MM, R=11mm Φ3.36mm 
6.Whole Packing Volume: 0.264m3 
7.Carton Number: 2 
8.Total Weight: 46kg