Features: 1.Ultra-light titanium optometry frame for comfortable wear. 2.Adjustable range of PD: About 25~40mm/0.98-1.57inch. 3.Up to 4 lenses can be inserted on each side. 4.Adjustable temple length / tilt angle, it can meet your different needs. 5.Applications: This product is suitable for eyewear inspection in optical shops, hospital ophthalmology, schools, factories and mines, etc. Specification:1.The distance adjustment range: the distance between the eyes is about 48 ~ 80mm/1.89-3.15inch, the left or right distance is about 24 ~ 40mm/0.94-1.57inch, the minimum scale value is 1mm/0.04inch. 2. Axis scale of the index plate: left indexing plate 120 ?? ~ 0 ?? ~ 135 ??; right indexing plate 45 ?? ~ 180 ?? ~ 60 ??, (axis scale increases counterclockwise along the frame axis, the interval is 5??). 3. The inner diameter of the frame: ??32.5mm. 4. The number of lenses that can be inserted into the left or right frame at the same time: 4 pieces. 5. The degree of rotation of the lens around the optical axis in the frame: 360??. 6. The non-parallelism of the optical axis of the lens and the geometric axis of the frame: ??2.5??. 7. The difference between the optical center of the lens and the geometric center of the frame: ??0.5mm. 8. The displacement of the lens relative to the geometric center position of the frame: ??0.3mm. 9. Nose support adjustment range: length: 0 ~ 14mm/0-0.55inch; angle: 0 ?? ~ 30 ??. 10.Left or right temple length adjustment range: about 98mm ~ 135mm/3.86-5.31inch. 11. The maximum spacing of the left and right temples: 200mm/7.87inch. Package list: 1 X Trial FrameDetails pictures:
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