Trial frame lens set 266JS

Trial lens set 266PCS Spheres: 40 pairs each of concave and convex Cylinders: 20 pairs each of concave and convex Prisms: 12 pieces Accessories: 14 pieces Cross cylinder: ×0.25 x0.5 Features: 1, large aperture metal ring, the lens through the light aperture Φ36.5mm, wide field of vision. 2, the use of the overall welding process, solid, not loose. 3, handle the degree of identification using single-sided lettering, more convenient to use and test. 4, cylinder and prism axis mark directly engraved on the mirror, never appear axial changes.