DIAMETER: 25.00mm + 0.03mm /- 0.08mm
THICKNESS: 3.00mm +/- 0.08mm
PARALLELISM: 3 ARC MINUTES MAXIMUM.
EDGE BEVEL: 0.20mm NOMINAL X 45deg, 2 PLACES.
FLATNESS: 1 WAVE/OVER CLEAR APERTURE, 2 FACES.
SURFACE QUALITY: 80-50 PER MIL-O-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 90% OF DIAMETER, 2 FACES.
MATERIAL TYPE/QUALITY: SINGLE CRYSTAL QUARTZ,
OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: Z-CUT
COATING: NONE, NOT REQUIRED.