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Infinity Optical System (IOS) C shaped, corrosion resistant, Anti mould treated, single mold modular stand 30° Inclined Siedentopf Binocular / Trinocular tubes, 360° rotatable with IPD 55-75 mm and dioptric adjustment Color Separation Prism of Dm150 (Blue Light), DM580 (Green Light). Cut-off filter: BA-530 (Blue light), BA-590 (Green light)