| 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 20D in 1D 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) 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 |
| Size | 291—323×315×85 |
