CONFIGURATION: DISC, PLANE-PARALLEL
DIAMETER: 1.000″+.000″/-.005″
THICKNESS: 2.50mm +/- 0.05mm
PARALLELISM: 0.03 DEGREES MAXIMUM.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
CLEAR APERTURE: CENTRAL 0.800″ MINIMUM DIAMETER,
2 FACES.
SURFACE ACCURACY: PWR: 5 WAVES MAXIMUM, 2 FACES
IRRG: 2 WAVES MAXIMUM, 2 FACES
SURFACE QUALITY: 60-40 PER MIL-C-48497, 2 FACES.
SURFACE ROUGHNESS: 20 ANGSTROMS Ra MAXIMUM.
MATERIAL TYPE/QUALITY: SAPPHIRE, SCHLIEREN GRADE,
NO TWINNING, C-AXIS PERP.
TO FACES (NO BIREFRINGENCE)
COATING: NONE, UNCOATED SUBSTRATE.