DIAMETER: 1.500″+.000″/-.005″
THICKNESS: 0.080″+/-.002″
PARALLELISM: 5 ARC MINUTES MAXIMUM.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
FLATNESS: 4 WAVES MAXIMUM @ 633um, 2 FACES.
CLEAR APERTURE: CENTRAL 1.300″MINIMUM DIAMETER.
SURFACE FINISH: C-C PER MIL-C-48497, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001) +/- 2deg.
COATING: NONE, NOT REQUIRED.