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    Re: "Improved" sextants
    From: Greg R_
    Date: 2006 Jul 6, 17:45 -0500

    Reply from Stanley Tools on whether their laser-measuring device would
    work to measure height above water:
    
    "The unit will not measure liquid or any other reflective material. If
    you are measuring a solid surface above the water, then it will be
    fine."
    
    Oh well, I guess it's back to sonar then... Has anyone tried any of the
    ultrasonic measuring devices over water? I think Polaroid used to use
    them for on their auto-focus cameras years ago, that might be an idea
    to pursue if anyone's got one of those laying around.
    
    --
    GregR
    
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