Usages:

This device is suitable for spectacles measurement detection departments, spectacles processing factories, spectacle sales departments, department of ophthalmology in hospitals and optical element factories to assay spherical lens diopter of ophthalmic lens or lens cylindrical lens, diopter, astigmatism axis of cylindrical lens, diopter of prism and diopter of cornea contact lens.

Features:

• Small in size
• Light in weight
• Convenient in use and full in function

Specifications:

• Vertex Power Range: +15D~-15D steps
• Vertex Power Step: 0~(+/-)10D (0.125D); (+/-)10D~(+/-)15D, (0.25D)
• Prismatic Power Range: 4 prism diopter, 1D step
• Cylindnical Axis Range: 0°~180°,  1° Steps
• Lenses Accommodated: Diameter 20mm~80mm
• Eyepiece Focusing: -5D~+5D
• Power Supply：DC 3V