Optical Optic Trial Lens Frame Eye Optometry Optician/Easily Changeable Cylinder Axis, Fully Adjustable Temple Length and Nose Rest glasses shop use

Description

Brand new optical trial lens frame, provides the ability to refract even the most difficult prescriptions and offers all the adjustments to ensure a proper and comfortable fit onto your patient Range of PD adjustments:PD of both eyes: 48 ~ 80mm;left or right PD: 24 ~ 40mm;minimum graduated value: 1mm Dividing disc axial graduation: 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 lensframe simultaneously:4 pieces Degree of lens rotating around optical axis in the lens frame:360° Nonparallelism between lens'optical axis and lens frame's geometric axis:≤2.5° Non-concentricity between lens'optical center and lens frame geometric center:≤0.5mm Displacement of lens in relation to position of lens frame geometric center:≤0.3mm Range of nose rest adjustment: Length:0 ~ 14mm; angle:0° ~ 30° Range of left or right lens frame leg's length adjustment:98 ~ 135mm. Maximum interval between left and right lens frame legs:200mm Material: lightweight metal or plastic Color:Black +　Silver Size:15.50*6.00*3.50cm