Zeiss W-Pl 10x/23 binoviewer pair with carbon fiber sleeves

This sale is for a pair of 10x (telescope focal length 25 mm) Zeiss W-Pl 10x/23 microscope eyepieces. They are modified using tough carbon fiber sleeves for telescopes with 1.25" focusers or binoviewers. The second number, 23, is the field stop. To convert microscope field stop to telescope true field of view, in degrees, divide the field stop by your scope's focal length, then multiply by 57.3. I estimate eye relief at 20 mm. The sleeves are custom made and held in place with silicone adhesive. They will not come off with normal use. Both EPs are independently focusable, which works well with no binding. These are sold as a pair only. $200 shipped CONUS. No international shipping.