DIAMETER: 60.00mm + 0.00mm /- 0.10mm
THICKNESS: 3.00mm +/- 0.10mm
PARALLELISM: 3 ARC MINUTES MAXIMUM.
FLATNESS: 7 WAVES MAXIMUM @ 633um, 2 FACES.
EDGE BEVEL: 0.50mm +/- 0.10mm X 45deg, 2 PLACES.
SURFACE FINISH: 80-50 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 50mm MINIMUM DIAMETER.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001) +/- 2deg.
COATING: NONE, NOT REQUIRED.