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    Blish prism
    From: Paul Hirose
    Date: 2000 Jul 13, 1:10 AM

    Here in the U.S., Edmund Scientific has been selling optics (surplus
    and new) to experimenters since the 1940s. I'm pretty sure I've seen
    in their catalog a prism of the type George Huxtable mentioned, i.e.,
    turns the line of sight 180 degrees and offsets it laterally some
    considerable distance.
    
    They surely have a Web site, though I don't know the URL. A search
    should turn it up easily, though.
    

       
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