4 Drawer Lens Den for 2 Clear Sphere.  Holds the following sphere powers:BC 8.2: -0.25 to -8.00 1/4D steps.  Powers -6.25 to -8.00 doubled up.BC 8.5: -0.25 to -8.00 1/4 D steps.   -8.00 to -10.00 1/2 D steps.  Powers -6.25 to -10.00 doubled up.BC 8.7: +0.25 to +8.00 1/4 D steps.  Powers +3.25 to +8.00 doubled up in bins.Dimensions: W 12 3/8", H 11 5/8", D 12 3/16"