| Sphere powers range: | +16.75D to -19.00D, with minimum reading 0.25D or 0.12D
(When +0.12D auxiliary lens or optional±0.12D 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) |
| Rotary prism: | 0 to 20∆D in 1∆D step |
| 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 left inward) |
| Corneal distance device: | 2mm forward and 5mm backward from standard plane; with scale |
| Effective field of view: | 19mm |
| Weight: | 5kgs |
| Size: | 323mm×315mm×85mm |