DIAMETER: 1.660″+/-.005″
THICKNESS: 0.0375″+/-.0025″
PARALLELISM: 3 ARC MINUTES MAXIMUM
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES
SURFACE ACCURACY: NOT SPECIFIED.
SURFACE QUALITY: 80-50 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001).
COATING: NONE, NOT REQUIRED.