DIAMETER: 25.40mm +/- 0.05mm
THICKNESS: 25.40mm +/- 0.01mm
PARALLELISM: 30 ARC SECONDS MAXIMUM.
FLATNESS: 10 WAVES/INCH MAXIMUM, 2 FACES.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
SURFACE QUALITY: 60-40 PER MIL-O-13830, 2 FACES.
O.D. SURFACE FINISH: COMMERCIAL POLISH
EDGE BEVEL FINISH: BRUSH POLISHED.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE
CRYSTALLOGRAPHIC ORIENTATION: (0001)
COATING: NONE, NOT REQUIRED.