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    Re: Sight Reduction Tables for Small Boat Navigation by HewittSchlereth
    From: Wolfgang Hasper
    Date: 2014 Jan 4, 21:53 +0100

    NIal,
    have you ever considered using a cylindrical slide rule
    such as the MHR1 or Bygrave?
    
    Very handy to use, I like it a lot (I use my
    implementation of the MHR1). Small, light weight and
    good to read in sunlight and unaffected by wind.
    
    Takes a little work to make, but everything that is
    needed is to hand now.
    
    Gary LaPooks implementaion of the principle is genius
    and dirt cheap, so you may wish to try that first. It
    is, howerver not really ideal to be used in an open
    cockpit.
    
    regards
    Wolfgang
    
    
    Am Mittwoch, 25. Dezember 2013 10:38 schrieb Nial
    McInerney:
    > Thank you Sir for your prompt and informative reply.
    > Your book is available on Alibris and I presume on
    > other book sites too. The reason for my interest is
    > because I have a problem using tables, calculators
    > or smart phones inside the cabin on small boats.
    > Particularly in the first few days. Outside I can
    > use Pub. 249 but it's big and heavy to lug around
    > when I help on deliveries. It's often difficult for
    > me to see a calculator or other tablet outside in
    > bright sunlight. I've tried Davies and Bayless but
    > find them too complicated. When sailing, as you well
    > know, there are a bunch of things to distract one's
    > attention and simpler works for me. My solution in
    > the past has been to take only the pages of 249 that
    > I will be using but your book sounds like a better
    > way to go. Nial
    >
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