CONFIGURATION: PLATE, PLANE-PARALLEL
L X W: 0.571″+/-.005″ X 0.500″+/-.005″
THICKNESS: 0.008″+/-.005″
PARALLELISM: 0.001″/INCH MAXIMUM T.I.R.
SURFACE FINISH: LOOSE ABRASIVE GROUND WITH 360
GRIT BORON CARBIDE. SURFACE
ROUGHNESS GOAL OF 30 MICROINCH Ra,
BOTH FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: c-PLANE