Product Description
Feature:1.Classic appearance, professional technology, precise measurement, easy and convenient operating,and best price value2.All the lens are anti-reflection coated.3.All Cross-Cylinder lens are Manus lens4.New leveling mechanism5.Fingertip adjustment for sphere power control6.Unique new convergence system mechanism7.Wide range of auxiliary lens combinations8.Precision machined to finest tolerances9.This is suitable for eyesight examination in spectacles shops, department of ophthalmology in hospitals, schools and enterprises
Specification
| Sphere powers range: | +16.75D to-19.00D, with minimum reading 0.25D or 0.12D(When +0.12D auxiliary lens or optional0.12D lens is in use)+26.75D to-29.00D (When optional 10.00D lens is in use) |
| Cylinder power range: | 0 to-6.00D, with minimum reading 0.25D or 0.12D (when auxiliary lens is in use)0 to-8.00D (when-2.00D auxiliary lens is in use) |
| Astigmatic axis scale: | 0 to 180 in 5 steps |
| Cross cylinder: | 0.25D, reversal type (synchronized with astigmatic axis) |
| Interpupillary adjustment: | 48mm to 80mm in 1mm step (right and left synchronized) |
| Forehead rest adjustment: | 16mm backward and forward |
| Convergence: | The optical axes of the lenses are aligned at a distance of 400mm from the vertexes of the corneas (2mm each for right and leftinward) |
| Interpupillary distance enabling convergence | =57mm to 80mm |
| Corneal distance device: | 2mm forward and 5mm backward from standard plane; with scale |
| Effective field of view: | 19mm |
| Weight: | 5kgs |
