<p>Zeiss Ikon Steritar is a stereo attachment (beam splitter) allowing to take stereo picture pairs.</p> <p>This adapter allows using Steritar attachment on lenses with M49x0.75 filter thread.</p> <p>Make sure that your Steritar has M34x1 male thread since I've heard that other version exists (with larger thread diameter).</p> <p>The adapter consists of body (made of anodized aluminium) and bronze insert secured by means of 3 sec screws. Such design allows angular adjustment and alignment of the attachment on any particular lens.</p> <p>For sale is the adapter only.</p>