Features:
- External reading
- ±25D measurement
- Wide field of vision observation
Specifications:
- Range of Measurement: 0~±25D
- Minimum Scale Value (External reading): 0125D
- Cylinder Axis Range: 0~180° step 1°
- Prism Diopter: 0~5△ step 1△ (CT 4225B w/ Prism Compensator) 0~20△ step 1△
- Prism Base Angle: 0~180°
- Eyepiece Adjustment: ±5D
- Dimension of objective lens: 16~86MM
- Dimensions: 22*12*43(CM)
- Weight: 3.9KGS
- Lighting Bulb: ~220V/-3V 3W, ~110V/-3V 3W