DIAMETER: 0.525″+/-.002″
THICKNESS: 0.0414″+/-.0009″
PARALLELISM: 0.0005″ MAXIMUM T.I.R.
EDGE BEVEL: 0.0015″/0.0085″ X 45deg, 2 PLACES.
FLATNESS: POWER: 1.2 FRINGES MAXIMUM, 2 FACES.
IRREG: 0.4 FRINGE MAXIMUM, 2 FACES.
TRANSMITTED WAVEFRONT: NOT SPECIFIED.
SURFACE FINISH: E-E PER MIL-F-48616 WITHIN CLEAR
APERTURE, 2 FACES.
CLEAR APERTURE: 0.290″MINIMUM DIAMETER, 2 FACES.
EDGE CHIPS: 0.020″ MAXIMUM SIZE.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001).
COATING: NONE, NOT REQUIRED.