Parameter: Measuring range: 6.5mm~9.5mm Precision: ±0.05mm Resolution of curvature radius of cornea: 0.01mm Measurement deviation of the main meridian axial position:± 2° Output: wireless infrared thermal printer Can observe the eye directly through the screen. Weight: <0.5Kg Dimension:240mm×90mm×60mm Power: 500mW+15%