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Murry, I believe all editions of Bowditch explain how to do this.It will be
in the chapter dealing with projections.The older editions of Duttons may
have the info also.
You can always buy a pad of double sided Universal Plotting sheets.They are
not very expensive.On the Nav.-l website there is a pdf file you can
download for free for the plotting sheets.
But if you want to learn or make your own "The American Practical Navigator"
will explain how.


-----Original Message-----
From: Navigation Mailing List
[mailto:NAVIGATION-L@LISTSERV.WEBKAHUNA.COM]On Behalf Of Murray Campbell
Sent: Tuesday, January 27, 2004 17:30
To: NAVIGATION-L@LISTSERV.WEBKAHUNA.COM
Subject: DIY plotting charts


 the books i'm trying to learn from mention that it is
possible to make your own plotting charts on graph or
blank paper, but they don't give any more info...

 it seems like i will need to create a map projection
for the needed lattitude...i'm not sure how i go about
scaling lattitude to longitude at different
lattitudes...is there a formula that does this??

 (i would rather not be dependent on buying and
stowing a bunch of plotting charts)

 thanks, m

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