Product model: WZ-100 refractor head
Structure composition: The product consists of spherical lenses, cylindrical lenses, prism lenses and auxiliary lenses

Technical Specifications    Measurement Range:

1.1. Spherical Power:
Range: +16.75D ~ 19.00D
Step: 0.25D
1.2. Cylindrical Power:
Range: 0D ~ -6.00D
When using an auxiliary cylindrical lens of -2.00D: 0D ~ -8.00D
Step: 0.25D
When using an auxiliary cylindrical lens of +0.12D:
Step: 0.12D
Range: 0° ~ 180°
1.3. Cylinder Axis:
Step: 5°

Detail picture: