CONFIGURATION: RECT.PLATE, STEPPED FACE.
OVERALL LENGTH: 7.874″+/-.001″
OVERALL WIDTH: 0.405″+/-.002″
STEPPED WIDTH: 0.248″+/-.001″
STEP HEIGHT: 0.030″ REF.ONLY.
OVERALL THICKNESS: 0.079″+/-.002″
LEDGE THICKNESS: 0.049″+/-.002″
PARALLELISM: 0.002″ MAXIMUM T.I.R.
FLATNESS: 0.0005″ SUPPORTED / 0.0050″ UNSUPPORTED.
SURFACE FINISH: 20-10 PER MIL-PRF-13830, STEPPED
(5 ANGSTROMS FACE ONLY. ALL OTHER SURFACES
RMS MAXIMUM) FINE GROUND.
EDGE CHIPS: 0.005″ MAXIMUM ALONG THE CRITICAL
STEP FACE EDGES. NO BEVEL ALLOWED.
EDGE BEVELS: 0.010″+/-.002″ X 45deg, WHERE SHOWN
ON DRAWING.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001).
COATING: NONE, NOT REQUIRED.