DIAMETER: 0.280″+/-.001″
THICKNESS: 0.050″+/-.001″
PARALLELISM: 3 ARC MINUTES MAXIMUM.
EDGE BEVEL: 0.010″/0.013″ X 45deg, 2 PLACES.
SURFACE FINISH: ALL SURFACES FINE GROUND.
MATERIAL TYPE/QUALITY: SAPPHIRE, CSI WHITE HIGH-
PURITY, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001)