CONFIGURATION: DISC, PLANE-WEDGED.
DIAMETER: 21.00mm +/- 0.025mm
THICKNESS: 2.00mm +/- 0.10mm (HIGH SIDE OF WEDGE)
WEDGE ANGLE: 0.30 DEGREES +/- 0.10 DEGREE
EDGE BEVEL: 0.08mm +/- 0.04mm X 45deg, 2 PLACES
FLATNESS: 1/2 WAVE POWER, 1/4 WAVE IRREG, 2 FACES.
SURFACE QUALITY: 60-40 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 17.00mm MINIMUM DIAMETER.
EDGE CHIPS: 0.25mm MAXIMUM IN ANY ONE DIMENSION.
MATERIAL TYPE/QUALITY: GERMANIUM, OPTICAL GRADE.
COATING: NONE, NOT REQUIRED.
MARKING: SEE DRAWING FOR CORRECT MARKING OF WEDGE
LOCATION.