Specifications:
| Vertex power | range | 15D-20D |
| step | 0-( -)10D for 0.125D（ -） | |
| 10D-( -)15Dfor0.25D | ||
| Prismatic power | range | 4 prism diopter |
| step | 1diopter | |
| Cylindrical axis | range | 0 to 180 degrees |
| step | 1 degree | |
| Lenses accommodated | Diameter 20mm to 80mm | |
| Eyepiece focusing | -5D to 5D | |
| DC and AC | (DC)3V(AC)6V/3W | |
Catalogue: PDF
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