| specifications: | 1.Ranges of measurement: 0 to±25D Minimum: 0.125D graduation up to ±5D 0.25D graduations over ±5D to ±25D
2.Cylinder Axis Range: 0 ~180°step 1°
3.Prismatic Power Range:Prism diopter of Pattern A: at 1△ interval in the range of 0~5△Prism diopter of Pattern B: at 1△ interval in the range of 0~20△
4. Prism base angle :at 50 intervals in the range of 0 ~180 degree
5.Eyepiece Adjustment: ±5D
6.Measurand Lens Diameter: φ16 ~φ80mm
7.Dimensions: 275mm(h)×130mm(w)×455mm(d)
8.Weight: 5.6kg
9.Lamp: 220V15W 110V15W
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