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20 Oct 05

CD-Sextant - Build your own sextant

http://www.tecepe.com.br/nav/CDSextantProject.htm
by wyclif 20 years ago
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03 Jul 05

How to Use a Compass - Compass alone

http://www.learn-orienteering.org/old/lesson1.html
by wyclif 20 years ago
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