Specification:
Range of PD adjustments：
PD of both eyes: 48 ~ 80mm left or right
PD: 24 ~ 40mm
Minimum graduated value: 1mm
Dividing disc axial graduation：
Left dividing disc: 120゜ ~ 0゜ ~ 135゜
Right dividing disc: 45゜ ~ 180゜ ~ 60゜
Graduated distance: 5゜.
Inner diameter of lens frame： φ32.5mm
Number of lens holding：
4 pieces Nonparallelism：
≤2.5゜ Non-concentricity ：
≤0.5mm Displacement：
≤0.3mm Range of nose rest adjustment:
Length: 0 ~ 14mm; angle:0゜ ~ 30゜
Range of leg′s length adjustment： 98 ~ 135mm
