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Features:
Specifications
Material: Aluminum Magnesium
Size: 52-70mm/2.04-2.75Inches
Package Includes: 1xTrial Frame 1.Pupil distance range:50; 52; 54; 56; 58; 60; 62; 64; 66; 68; 70mm. Please note the color when placing the order. 2.Axis scale:360° on the left; 360° on the right.The axis scale increases anticlockwise along the axis of the frame, and the marking interval is 5°. 3.Effective internal aperture of frame:Φ38mm. 4.The number of lenses that can be inserted into the left and right frames:3. 5.Rotation degree of optical axis of lens in inner ring of frame:360 °. 6.The nonparallelism between the optical axis of the lens and the geometric axis of the frame: ≤2.5 7.The difference between the optical center and the geometric center of the lens:≤0.5mm. 8.Displacement of the lens relative to the geometric center of the frame:≤0.3mm. 9.Adjustable length range of the left and right frame leg:125~155mm.
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