1. Range of PD adjustments:PD of both eyes:50~76mm;
Left or right PD:24~40mm,Minimum Calibration Value:1mm.
2. Axial calibration on each disc:
Left disc:120°~0°~135°,Right disc:45°~180°~60°,
Axial calibration increases counter clockwise along the lens frame axis, and the calibration distance is 5.
3. Inner diameter of lens frame:Φ38mm
4. The Number of lens which can be inserted into left or right lens frame simultaneously:4 pieces
5. Degree of lens rotating around optical axis in the lens frame:360°
6. Non-parallelism degree between lens' optical axis and lens frame's geometric axis:≤2.5°
7. Non-concentricity between lens' optical center and lens frame geometric center:≤0.5mm
8. Displacement of lens in relation to position of lens frame geometric center:≤0.3mm
9. Range of nose pad adjustment:Length:0~14mm,Angle:0°~30°
10. Range of left or right lens frame leg's length adjustment:98mm~135mm
11. Maximum interval between left and right lens frame legs:200mm