penta prism

1.Material                           BK7, UVFS, TF10, IRFS, FS

2.Dimensions A x B, mm  10.0 x 10.0, 12.7 x 12.7, 15.0 x 15.0, 20.0 x 20.0, 25.4 x 25.4, 40.0 x 40.0

3.Surface Flatness              < λ / 4 @ 633 nm

4.Surface Quality               40 - 20 scratch and dig

5.90 deg Deviation Tolerance < 30 arcsec