AL0JJ1378394

DIAMETER: 1.378″+.000″/-.004″
THICKNESS: 0.394″+/-.010″
PARALLELISM: 0.5 ARC MINUTES MAXIMUM.
EDGE BEVEL: 0.007″ MAXIMUM X 45deg, 2 PLACES.
TRANSMITTED WAVEFRONT ERROR: 1/10 WAVE MAXIMUM.
SURFACE QUALITY: 20-10 PER MIL-O-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 1.300″ MINIMUM DIAMETER
FACE, 2 PLACES.
SURFACE ROUGHNESS: < 5.0 ANGSTROM RMS, 2 FACES
MATERIAL TYPE/QUALITY: SAPPHIRE, AVERAGE OPTICAL
GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001) +/- 1.0 deg.