Specifications\Grade Precision Standard
Width 3 - 50mm 3 - 100mm
Width Tolerance 0.05mm 0.127mm
Length 3 - 50mm 3 - 100mm
Length Tolerance 0.05mm  0.127mm
Thickness 0.5 - 5mm 1 - 5mm
Thickness Tolerane 0.05mm 0.1mm
Edge ground or finished ground or finished
Angle Tolerance 10 30
Flatness 1λper inch @633nm 2λper inch @633nm
Parallelism <1 <5
Surface Qulity 40/20 80/50
Clear Aperture ≥85% ≥85%
Bevel 0.25*45 0.25*45
Coating according to your requests
Material BK7,sapphire,float glass,fused silica,quartz etc.