Roof Prism

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Specifications:

Material	N-BK7a, Fused Silica, other optical glass	Angular Tolerance	±3 arcmin
Surface Quality	40/20 S/D	Clear Aperture	>90%
Flatness	<λ/10@632.8nm	Roof Angle Tolerance	Up to 3 arc seconds
90° Angle Tolerance	±2 arcmin or ±5 arcsec