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    Re: Calculator dunking
    From: Hewitt Schlereth
    Date: 2015 Jun 13, 15:34 -0700
    Frank, I've had a fx-260solar for several years. Never dunked it, but these comments made me look at it more closely.

    Turning it over, I see 6 Phillips screws which evidently hold the halves of the case together. We're it to get wet, my instinct would be to open it, rinse with fresh water if it was a salt dunk, shake, set down on a paper towel to help it dry, inspect and move as necessary to drier areas of the towel.

    Thoughts?

    Hewitt

    BTW Next Saturday June 20 begins the 6th round of my course All Is Not Lost When The GPS Dies - aka Celestial Navigation for Cruisers. It's the classic Noon Sight plus bracketing noon for longitude. Anyone interested should call the San Diego Maritime Institute - 619-225-1783.



    On Jun 13, 2015, at 2:56 PM, Frank Reed <NoReply_FrankReed@fer3.com> wrote:

    Lu,

    Yes, the reason I posted my calculator dunking story is to remind people that these cheap, standard "scientific calculators" are highly reliable. And since the fx260 is solar-powered, it's almost crazy not to use one for navigation calculations. Sure, thirty years ago, one could still have doubts about calculators, but today?? Why do calculations on paper --except for the entertainment value, of course (not that there's anything wrong with that!).

    By the way, for various reasons, I have made myself an Android calculator app functionally identical to the fx260. Not everything works, but it's all that's needed for my navigation classes. If any of you with Android devices would like to try it out, you can find a link to it on the web page for my "Modern Celestial Navigation" class here: http://www.reednavigation.com/mod-class/. Note that you will need to enable non-app-store app installation in order to get the file from this location.

    As for smartphones and such, some are very sensitive to water. But then they do also make waterproof models that can function immediately, even after total immersion in water for many minutes. Here's a brief review of recent waterproof smartphones: http://www.digitaltrends.com/mobile/best-waterproof-phones/.

    Another concern with smartphones and tablets is the value of the data stored on them. Do we really want to risk losing all our phone numbers and other contact data along with hundreds of photos and other files when the phone accidentally gets dropped over the side while sailing? That's yet another advantage of a cheap calculator: if you do lose it, you won't care.

    Frank Reed
    ReedNavigation.com
    Conanicut Island USA

     

       
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