CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 0.400″+/-.002″
THICKNESS: 0.100″+/-.002″
PARALLELISM: 2 ARC MIN MAXIMUM
EDGE BEVELS: 0.010″ MAXIMUM X 45deg, 2 PLACES.
FLATNESS: PWR: 5 FRINGES MAXIMUM, 2 FACES.
IRRG: 1 FRINGE MAXIMUM, 2 FACES.
SURFACE FINISH: FACES POLISHED 60-40
OD AND BEVELS BUFF POLISHED.
CLEAR APERTUE: CENTRAL 0.270″MINIMUM, 2 FACES.
EDGE CHIPS: NONE ALLOWED INSIDE CLEAR APERTURE.
MATERIAL TYPE/QUALITY: SAPPHIRE, HEMEX GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001)
COATING: NONE, NOT REQUIRED.