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John,

The only way to have a more readable
scale is to build a larger instrument.

I have made a large scale, which can
be found on the web at:

www.tecepe.com.br/nav/xtant/SextantBMP.jpg

this is the scale for a 514mm radius octant
(about 20 inches). In this scale, each degree
is 9mm wide ( 1/3"). This is what I call the
Bowditch octant scale.

The scale must be printed with 300 DPI resolution.
Print it and check if the size is suitable for
your vision. If it's not, we can try an even
bigger.

Omar


----- Original Message -----
From: "John Kennedy" 
Subject: Re: NAVIGATION-L Digest - 21 Nov 2004 to 28 Nov 2004 (#2004-55)


> Omar: my eyes have been deteriorating for the past few years, but the eye
> surgeon says I'm now going to hold my own. I don't have as much ability to
> see fine detail as I used to have.
>
> Can your scale printer program be altered to produce a scale larger than
you
> used for your octant? I'm thinking that if I built myself an octant,
> sextant, etc., about 50% bigger than normal, I'd actually be able to read
> the scales when I want to.
>
> I've never used a sextant before and it would be fun to learn.

   

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