Technical Specifications
| Spherical Degree DS | Scope: -10.5 D to +7.5 D Resolution: 0.25 D or 0.01 D Precision: ± 0.5 D ± 20 % |
| Cylinder Power DC | Scope: -3 D to +3 D Resolution: 0.25 D Precision: ± 0.5D |
| Axis | Range: 1° to 180° Resolution: 1 Precision: ± 10 to ± 5 |
| Working Distance | 39.37 in ± 1.97 in (100 mm ± 5 mm) |
| Pupil Distance | 1.81 in to 3.15 in (30 mm to 80 mm) |
| Battery | With battery |
| Pupil Size | 0.16 in to 0.35 in (4.0 mm to 9.0 mm) |
| Size | 8.07 in x 7.28 in x 4.53 in (20.5 cm x 18.5 cm x 11.5 cm) |
| Weight | 2.2 lb (1 kg) |
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