High Quality Optical Optic Trial Lens Frame Eye Optometry Optician,Changeable Cylinder Axis, Adjustable Temple Length and Nose Rest


High Quality Professional Optometry Titanium Optical Trial Lens Frame.


Holds up to 8 lenses (4 pairs), with standard diameter of 38 mm.


Easy PD adjustment for both eyes with PD Adjustable range: 48~80mm.


Easier to use and easier to wear Easily changeable cylinder axis


Features & Specifications:


* Range of PD adjustments: PD of both eyes: 48~80mm; Left or right PD: 24~40mm; Minimum Calibration Value: 1mm.


* 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: Φ32.5mm.


* The Number of lens which can be inserted into left or right lens frame simultaneously: 4 pieces.


* Degree of lens rotating around optical axis in the lens frame: 360°.


* Non-parallelism degree between lens optical axis and lens frames 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: 98mm~135mm.


* Maximum interval between left and right lens frame legs: 200mm.
Package included:1x Trial Lens Frame