AISITESY Trial Lens Frame Ophthalmic Equipment Optical Universal Trial Frame Adjustable PD 54-70mm Pure Titanium 5470

• 【Adjustable range】Pupillary distance adjustment range: pupillary distance range of both eyes: 54-70mm; minimum scale value: 1mm. axis scale: left and right scale: 165°~0°~180°~25°. Axis scale along the axis of the frame counterclockwise increase, mark the interval of 5 °.
• 【Effective aperture】Effective internal aperture of the frame: Φ8mm. number of lenses that can be inserted in the left and right frames: 4 (3 in the front and 1 in the back). Lens rotation of the optical axis in the inner circle of the frame: 360 °. Lens optical axis and mirror frame geometric axis of non-parallelism: ≤ 2.5 °.
• 【High precision】 The non-parallelism of the optical axis of the lens and the geometric axis of the mirror frame: ≤ 2.5°. The difference between the optical center of the lens and the geometric center: ≤ 5mm. lens displacement relative to the geometric center of the frame: ≤ 0.3mm. adjustment range of the nose pad: length can be increased by 2mm; width: 2mm; angle: 0 ° ~ 180 ° about the length of the mirror leg adjustable range: 140 ~ 170mm.
• 【Titanium material frame】 Trial Lens Frame is made of titanium alloy and plastic for light trial frame: very strong and light, only 58 grams
• 【Widely used】Simple design, easy to operate. Smooth and versatile cylindrical axis rotation. Suitable for professionals. It is very useful for optometrists, vision testers and home use High quality and long life

9 kinds of PD for you to choose: One touch PD adjustment (2mm increments): 54, 56, 58, 60, 62, 64, 66, 68, 70 The dial shaft scale:0 °--180 ° --160 ° - - 20 °Axis scale distribution along the axis frame counterclockwise, its score interval to 10 ° Adjustment range of length of left or right lens feet: 90--99mm, with each size increasing by 1mm from small to large 54-70mm PD adjustment with single knob. Precise measurement, very professional quality Multi-function : Adjust the PD, axis of the lens, length of the frame, position of the nose pad Titanium material frame, Light weight trial frame made of Titanium Alloy and Plastic:very strong and light just 58g Easy fitting adjustments with simple design. Smooth changeable cylinder axis twirls. Suitable for professionals.With High quality and long service life.