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By certification 
Specification of our amici prism as follow:
*Material BK7 or UV grade fused silica
*Dimension Tolerances +/-0.1mm
*Clear Aperture >80%
*Surface Quality:60/40 Scratch/Dig
*Surface Flatness lambda/4 at 633nm
*Angle Tolerance 60 degree+/-3 minutes
*Chamfer 0.3mm+/-0.1mm m
*Coatings Optional
The general tolerance specifications above provide a guideline regarding manufacturing capabilities for optics ranging in size from 3-76.2mm. The manufacturing limits are not absolute;tighter tolerances may be possible. Part specific tolerances may vary depending on component size, shape, and/or material.
*Material BK7 or UV grade fused silica
*Dimension Tolerances +/-0.1mm
*Clear Aperture >80%
*Surface Quality:60/40 Scratch/Dig
*Surface Flatness lambda/4 at 633nm
*Angle Tolerance 60 degree+/-3 minutes
*Chamfer 0.3mm+/-0.1mm m
*Coatings Optional
The general tolerance specifications above provide a guideline regarding manufacturing capabilities for optics ranging in size from 3-76.2mm. The manufacturing limits are not absolute;tighter tolerances may be possible. Part specific tolerances may vary depending on component size, shape, and/or material.
