NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Plotting with Helix Compass Rose
From: Greg Rudzinski
Date: 2012 Feb 3, 07:53 -0800
From: Greg Rudzinski
Date: 2012 Feb 3, 07:53 -0800
At $2 the Helix angle and circle maker #36002 is worth a try.
http://www.misterart.com/drawing-illustration/drawing-lettering-aids/protractors-compasses/helix-angle-circle-maker.html?utm_source=google&utm_medium=datafeed&utm_term=31333&utm_campaign=GoogleProducts
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