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Overall dimensions, cm | 50x26.5x53.8 |
measurement range Sph: | -20, +22 D |
Cylinder, dpt | +/-10 |
Axis | 0-180° |
Vertex distance | 0; 10.5; 12; 13.75; 15; 16.5 mm |
Measurement step | 0.01D/0.12D/0.25D |