DIAMETER: 31.00mm + 0.00mm /- 0.10mm
THICKNESS: 3.00mm +/- 0.05mm
PARALLELISM: 1 ARC MINUTE MAXIMUM.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES
SURFACE ACCURACY: 5 WAVES/INCH MAXIMUM, 2 FACES.
SURFACE QUALITY: 80-50 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001) +/- 2deg.
COATING: NONE, UNCOATED SUBSTRATE