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Main Technical Indicators
Optometry Child Universal Trial Lens Frame Optician Test Tool 52-70mm
Features: 360 degree astigmatism axis position, error within one degree.
Lightweight and comfortable, weighing 22.2-22.6 G.
Flexible memory plastic, can bend 120 degrees.
Integrated soft silicone nose support, more comfortable to wear.
Size: 52-70mm
Package Includes: 1xTrial Frame
Specifications
1.Pupil distance range: 52; 54; 56; 58; 60; 62; 64; 66; 68; 70mm.
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.
Trial Lens Frame
• Accommodates 5 pairs of trial lenses.
• Adjustable temple length and angle, bridge height&inclination by a sliding rack and pinion.
• Easily-shaped ear rest.
• Light weight, only 61 g.
Specifications:
1) PD range: 25~40 mm(each side), 50~80 mm(total both eyes)
2) Temple length: adjustable
3) Nose bridge height: 0~23 mm
4) Nose angle: 0°~360°
5) Lens rotation: full 360°
6) Weight: 61 g
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United States
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