RE: [Paddlewise] Dead Reckoning Accuracy

From: PeterO <rebyl_kayak_at_iprimus.com.au>
Date: Sun, 6 Jun 2004 18:52:40 +1000
Michael wrote: -
> 3. Use a portland square
> Peter,
> I've never heard of this.  Could you point us to what one looks like?

Allan wrote
>I presume it is a square protractor.
>Have a look at this:
> http://www.whom.co.uk/html/protract.htm


G'Day,

Allan, what a useful web page, excellent description of how to use a square
protractor, thanks!

Here is a web page that describes a few different protractors including a
Portland Square and Douglas protractor. I think the Portland Square and
Douglas protractors are very similar & maybe the same.

	http://ca.binnacle.com/online/dept.asp?dept_id=18065

I can see what Michael means about searching the web under the name Portland
square - It seems to be a very popular part of London.

All the best, PeterO
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Received on Sun Jun 06 2004 - 01:54:57 PDT

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