Trial frame AF-100
1. Usages
"It is suitable for spectacles shops,department of ophthalmology in hospitals,shools and enterprises to measure eyesight."
2. Main Technical Indexes
1.Range of PD adjustments: PD of both eyes: 48 ~ 80mm, left or right PD: 24 ~ 40mm, Minimum graduated value: 1mm
2.Dividing disc axial graduation: Left dividing disc: 1200 ~ 00 ~ 1350°, Right dividing disc: 450 ~ 1800 ~ 600°. "Axial graduation increases along the lens frame axis counter clockwise,and the graduated distance is 50."
3.Inner diameter of lens frame: 32.5mm
4.Number of lens which can be inserted into left or right lens, frame simultaneously: 4 pieces
5. Degree of lens rotating around optical axis in the lens frame:3600
6. Nonparallelism between lens´ optical axis and lens frame´s geometric axis: ≤2.50
7. Non-concentricity between lens´ optical center and lens frame geometric center: ≤0.5mm
8. Displacement of lens in relation to position of lens frame geometric center:≤0.3mm
9. Range of nose rest adjustment: vertical adjustment range: 0 ~14mm Lateral angle range: 00 ~ 3600
10. Range of left or right lens frame leg´s length adjustment: 98 ~ 135mm
11. Maximum interval between left and right lens frame legs: 200mm
12. Weight:65g
