CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 2.500″+/-.002″
THICKNESS: 0.125″+/-.002″
PARALLELISM: 3 ARC MINUTES MAXIMUM
EDGE BEVEL: 0.010″/0.015″ X 45deg, 2 PLACES.
SURFACE ACCURACY: 10 WAVES/INCH MAXIMUM, 2 FACES.
SURFACE QUALITY: 80-50 PER MIL-O-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGAPHIC ORIENTATION: RANDOM
COATING: NONE, NOT REQUIRED.