Specifications
Length (mm): 12.7
Width (mm): 12.7
CT (mm): 6.0
Material: Pyrex
Specifications: Length and Width for dimensions 0 to 101.6: +/- .25
Length and Width for dimensions over 101.6: +/- 1.0
Center Thickness (CT): +/- .2
Cosmetics R1: 40/20
Surface Quality R1: See below @ 546.1nm
Surface Quality R2: Medium grind
Clear Aperture: 90% of surface area
All dimensions are in millimeters.