| Range of PD adjustments |
: PD of both eyes: 48-80mm Left or right PD: 24-40mm |
| Minimum Calibration Value |
: l mm |
| 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' |
| Inner diameter of lens frame |
: 0 32.5mm |
| The Number of lens, which can be inserted into lens frame simultaneously |
: 4 pieces |
| Degree of lens rotating around optical axis in the lens frame |
: 360" |
| Non- prallelism degree between lens optical axis and lens frame's geometric axis |
: < 2.5' |
| Non-concentricity between lens optical center and lens frame geometric center |
: < 0.5mm |
| Displacement of lens in relation to position of lens frame geometric center |
: < 0.3mm |
| Range of nose pad adjustment: Length |
: 0-14mm; Angle: 0" -30" |
| Range of left or right lens frame leg's length adjustment |
: 98-135mm |
| Maximum interval between left and right lens frame legs |
: 200mm |
| Weight |
: 72g |
