DIAMETER: 0.500″+/-.002″
THICKNESS: 0.020″+/-.002″
PARALLELISM: 5 ARC MINUTES MAXIMUM.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
SURFACE ACCURACY: 10 WAVES/INCH MAXIMUM, 2 FACES.
SURFACE FINISH: 40-20 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 0.425″ MINIMUM DIAMETER.
MATERIAL TYPE/QUALITY: CRYSTAL QUARTZ, OPTICAL
QUALITY.
CRYSTALLOGRAPHIC ORIENTATION: Z-CUT
COATING: NONE, NOT REQUIRED.