DIAMETER: 30.00mm + 0.00mm /- 0.10mm
THICKNESS: 3.00mm +/- 0.10mm
PARALLELISM: 10 ARC SECONDS MAXIMUM.
FLATNESS: 1/10 WAVE MAXIMUM, 2 FACES.
EDGE BEVEL: 0.010″/0.015″ X 45deg, 2 PLACES.
SURFACE FINISH: 60-40 PER MIL-O-13830. 2 FACES.
CLEAR APERTURE: CENTRAL 85% OF DIAMETER FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001)
COATING: NONE, NOT REQUIRED.