Quick Details
Place of Origin: Jilin, China
Brand Name: realpoo
Material: Glass
Surface Quality: 40/20, 40/20,60/40,80/50 scratch and dig
Dimension Tolerance: +/-0.1
Angle Tolerance: 3arc minutes
Flatness: 1/4lambda
Diameter Tolerance: +0.0,-0.1mm
Center Thickness Tolerance: +/-0.1mm
Centration: +/-30seconds
Surface Figure: lambda/4
