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Old 6th Aug 2015, 16:40
  #81 (permalink)  
tmmorris
 
Join Date: Feb 2003
Location: Oxford
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Originally Posted by fatmanmedia
i use this when I’m flying, very accurate and never needs winding or running out of power.

http://cdn.instructables.com/FZ7/CIX...15LR.LARGE.jpg

or i use this

http://www.flli-consonni.com/F.lli%2...g/Art510_2.jpg

Fats
I've actually got a portable sundial... Gnomon on a compass card. Works sort of.
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