Paddle Retinoscopy Rack Set

This two paddle retinoscopy rack set has one paddle with plus lenses and the other with minus lenses. Optics on both are 0.5, 1.0, 1.5. 2.0, 2.5, 3.0, 3.5, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 12.0, and 15.0. Lenses are 16mm diameter and a..