DIAMETER: 1.500″+.000″/-.004″
THICKNESS: 0.500″+/-.002″
PARALLELISM: 3 ARC MINUTES MAXIMUM.
FLATNESS: 10 WAVES/INCH MAXIMUM @ 633um, 2 FACES.
EDGE BEVEL: 0.010″/0.015″ X 45deg, 2 PLACES.
SURFACE FINISH: 80-50 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 85% OF DIAMETER FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001).
COATING: NONE, NOT REQUIRED.