CONFIGURATION: DISC, PLANO/CONVEX
DIAMETER: 0.315″+/-.001″
CENTER THICKNESS: 0.138″REF ONLY
EDGE THICKNESS: 0.125″+/-.001″
EDGE BEVEL: 0.015/.020″ X 45deg, 2 PLACES.
SPHERICAL RADIUS: 0.9519 +/-.005″
CENTERING ERROR: 3 ARC MINUTES MAXIMUM.
CLEAR APERTURE: CENTRAL 0.280″ MINIMUM DIAMETER.
SURFACE FINISH: 10-10 PER MIL-O-13830, 2 FACES.
SURFACE FIGURE: PLANO: POWER: 10 FRINGES MAXIMUM
IRREG: 5 FRINGES MAXIMUM
SPH.RAD: POWER: 10 FRINGES MAXIMUM
IRREG: 5 FRINGES MAXIMUM
MATERIAL QUALITY: OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: C-AXIS PERPENDICULAR
TO PLANO FACE, (0001) NOMINAL.