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    Re: Sextant Accuracy and anomalous dip.
    From: Richard M Pisko
    Date: 2003 Mar 20, 18:00 -0700

    Back before the dawn of time (on Mon, 17 Mar 2003 19:53:20
    +0000, to be exact), George Huxtable
     wrote:
    
    >Dipmeters have been invented and used in oceanographic survey work. A crude
    >but effective dipmeter can be knocked together without great expense. It
    >requires a view of the horizon in two opposite directions to be visible
    >simultaneously from somewhere on deck.
    >
    Is there a handy web reference or drawing?  Most of the
     hits on Google
    seem to be referring to the magnetic dipmeter.  I wonder if
    it would look something like a WWI or WWII rangefinder
    without the two end prisms / mirrors?
    
    
    --
    Richard ...
    
    
    

       
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