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    Re: Calculator Recommendations
    From: Francis Upchurch
    Date: 2017 Sep 4, 19:14 +0000

    Hi Jing,
    Welcome aboard.
    
    I  now use a Casio fx-3650P.Wrapped in a waterproof plastic bag. I have 
    programmed 4 calculations into it;
    
    Works easily and perfectly. degrees in decimals or minutes/seconds, no 
    problems, can mix as well. Very seaworthy and robust in plastic bag. (Mine 
    also kept in a metal box (Faraday cage)to protect against lighting or nuclear 
    strikes!)
    
    I also have a old Texas TI-36XPro which can take 1 pre-program, I have 
    standard (single)modern time sight on mine.
    Best wishes and good luck.
    
    Francis
    
    

       
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