Description
Technical Specification
| Sphere range | +16.75 D to -19.00 D Â Step 0.25 D |
| Cylinder range | 0 D to -6.00 D (0.00 to -8.00 D with additional lens of -2.00 diopters) |
| Cylinder axis | 0 to 180, 5 steps |
| Cross cylinder | ±0.25 D |
| Rotary prisms | 5.0 to 20, 1 step |
| P.D. adjustment | 2.14 in x 2.95 in (54.250 mm to 75mm) |
| Forehead-rest adjustment | 0.63 in (16 mm) |
| Corneal vertex distance | 0.47 in (12 mm) |
| Size | 2.14 in x 3.89 in x 11.49 in (54.43 mm x 99 mm x 292 mm) |