Field Testing Set F.A. (13 lenses)

This set is presented in a smart wooden box and comprises the following 13 lenses:

6 plus (+) Spheres:   1, 2 , 4, 5, 6, and 8 dioptres; 

3 minus (-) Spheres: 1, 2, and 3 dioptres; 

4 minus (-) Cylinders:1, 2, 3, and 4 dioptres.