DIAMETER: 0.492″+/-.004″
THICKNESS: 0.059″+/-.002″
PARALLELISM: NOT SPECIFIED.
FLATNESS: NOT SPECIFIED.
SURFACE FINISH: 80-50 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: RANDOM.
COATING: NONE, NOT REQUIRED.