DIAMETER: 2.00mm NOMINAL
CENTER THICKNESS: 1.56mm +/- 0.05mm
SPHERICAL RADIUS: 1.00mm +/- 0.025mm
FLATNESS(PLANO SURFACE): 10 WAVES/INCH MAXIMUM.
SURFACE FINISH: 80-50 OR BETTER, 2 FACES.
MATERIAL QUALITY: OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: RANDOM