DIAMETER TOLERANCE: +/-.005″
THICKNESS TOLERANCE: +/-.002″
PARALLELISM: 3 ARC MINUTES MAXIMUM.
FLATNESS: 10 WAVES/INCH MAXIMUM, 2 FACES.
SURFACE FINISH: 80-50 OR BETTER, 2 FACES.
MATERIAL QUALITY: OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (110) PLANE PARALLEL
AND IN THE PLANE OF
FACES.