CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 1.750″+.000″/-.005″
THICKNESS: 0.3125″+/-.0025″
PARALLELISM: 3 ARC MINUTES MAXIMUM.
EDGE BEVELS: LIGHT PROTECTIVE BEVELS, 2 PLACES.
SURFACE ACCURACY: NOT SPECIFIED.
SURFACE QUALITY: 60-40 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE
CRYSTALLOGRAPHIC ORIENTATION: (0001)
COATING: NONE, NOT REQUIRED.