This device is designed to allow the user to switch a beam of light between two different light sources or detectors 180 degrees apart by use of a front surface mirror or beam splitter.  The mirror surface is accurately positioned on the vertical axis of rotation.  Very fine lockable adjustment screws are provided for precise adjustment of the angle of rotation.  A filter slide is provided in the 90 degree position. This slide is tilted at 5 degrees to prevent specular reflections from re-entering the system axes. The device comes ready to load optics of choice and includes one filter holder without filter.  Filter holders are available separately.

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FEATURES:

• Spring loaded optic mount locates mirror face accurately on the axis of rotation. The mount is design specifically for mounting fragile pellicle beam splitters. 
• Simply pull and turn spring loaded clamps and remove and replace standard 1 inch diameter optic. 
• Precision preloaded ball bearing rotation mount.
• 80 thread per inch angle adjusting ball end screws rotate against a hardened and ground tool steel lever for precise angle adjustment. The adjustment screws are made from hardened 440C stainless steel. This design provides two micro-radian of adjustment and repeatability of the reflected mirror beam angle.
• Locking screws clamp the ball-end angle adjusting screws without torque.
• Design provides stability over wide temperature range.
• Over the center spring loads the beam splitter mount against the ball-end screws in either position.
• Snap in filter slide accepts 0.5 inch filters. Comes with one filter slide.