CONFIGURATION: DISC, CONCAVE/CONVEX
DIAMETER: 50.00mm + 0.00mm /- 0.10mm
EDGE THICKNESS: 6.50mm +/- 0.10mm
CENTER THICKNESS: 6.00mm +/- 0.10mm
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES
SPHERICAL RADIUS: CONVEX: 66.00mm +/- 0.33mm
CONCAVE: 60.00mm +/- 0.30mm
CENTERING ERROR: 5 ARC MINUTES MAXIMUM
CLEAR APERTURE: CENTRAL 48.50mm DIAMETER, 2 FACES.
ANNULAR RING DIA: NOT TO EXCEED CLEAR APERTURE.
( CONCAVE FACE )
SURFACE ACCURACY: NOT SPECIFIED.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRPAHIC ORIENTATION: (0001)
COATING: NONE, NOT REQUIRED.