2 x 2 x 2 Slide Adapter for Stereoscopic Viewer

Allows 2 x 2 x 2  (stereo with 2 2 x 2 slides) to be viewed in the Franka Achromatic viewer.  Some people use these for home made viewers as well.  These are used for people with full frame stereo cameras like the RBT and for two camera setups with film cameras.  People can use normal slide mounts for their images.  

 Some people use these for home made viewers as well.  That way they can make a viewer that has room for an adapter that allows them to view Realist slides as well.