Optometry equipment trial lens frame TF-B
1 . Metal
2 .48--80mm
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Product Description
Specification
| PD range | 48--80mm |
| Material | Metal |
| Lens holders | 4 pieces |
| Adjustable length range of the left and right frame leg | 115--150mm |
| Adjustable range of nose pad | adjustable length:0--14mm ; angle: 0°--30° |
| Displacement of the lens relative to the geometric center of the frame | ≤ 0.3mm |
| Rotation degree of optical axis of lens in inner ring of frame | 360° |
