| This device is suitable for spectacle measurement, spectacle
processing factories, spectacle retail stores, departments of
ophthalmology in hospitals and optical element factories to
measure diopter of spherical and cylindric lens, astigmatism
axis of cylindric lens, diopter of prism and of contact lens. Specifications Ranges of diopter measurement 0- +- 25D Minimum 0.125D graduation up 0 to +- 5D and 0.25D graduations over +-5D to +- 25D Cylinder Axis Range: 0 - 180º step 1º Prismatic Power Range: Prism diopter of pattern A: 0.5^ prism diopters, 1^ graduations Prism diopter of pattern B: (with prism compensation device) 0-20^ prism diopters, 1^ graduations Prism Base Angle 0 - 180º Minimum scale value 1º 180-360º Minimum scale value 5º Eyepiece adjustment: +- 5D Dimension of objective lens 16mm/0.63in - 80mm/3.15in Overall Size: 226x150x390mmq / 8.9x5.9x15.35 inches Weight: Pattern A 4.2kg / 9.70lb Pattern B (w/Prism compensator device) 4.3kg / 9.46 lb Lighting Bulb 220v/110v - 15W Prism Compensator: Optional for Bothe Models |