TF-BT Titanium Alloy Trial frame, 52g

CE

Features:
*  Titanium material frame, very strong and light
*  Precise measurement, very good quality
*  Multi-function : Adjustable PD, adjustable astigmatism axis of the lens, adjustable length of the frame, adjustable position of the nose pad
*  Material: Titanium Alloy, Nylon

Specifications:
*  Net Weight: 52g
*  PD range：52、54、56、58、60、62、64、66、68、70.
*  Binocular PD:54~70mm,1mm per step.
*  Monocular PD:24~40mm,1mm per step.
*  Monocular moving range:25~40mm.
*  Left dividing disc:120°～0°～135°
*  Right dividing disc: 45°～180°～60°
*  Axial graduation increases along the lens frame axis counter clockwise and the graduated distance is 5°.
*  Inner diameter of lens frame:32.5mm
*  Number of lens which can be inserted into left or right lens frame simultaneously: 4 pieces
*  Degree that front lens rotates around optic axis inside lens frame:360°.
*  Nonparallelism between lens optical axis and frame geometry axis: ≤2.5°
*  Decentraction between lens optical axis and frame geometry axis: ≤0.5mm
*  Displacement of lens that relative to frame geometry axis: ≤0.3mm
*  Range of nose rest adjustment: 0～14mm,angel:0°～30°
*  Temple adjustment: 98-135mm.
*  Maximum distance between left and right temple: 200mm