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    Submarine periscope sextant sold on eBay
    From: Paul Hirose
    Date: 2003 Apr 7, 10:42 -0700

    I've never seen one of these before. It's purportedly a British
    submarine periscope sextant. The auction finished on eBay this
    morning; winning bid was 160 pounds.
    
    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2520120537&r=0&t=0&indexURL=1#ebayphotohosting
    
    Markings visible in one photo appear to be:
    
    SOLAR SEXTANT FOR SUBMARINE PERISCOPE
    TYPE C.K.28/25  NO. G81/2
    
    Anyone know how such a sextant works?
    
    
    

       
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