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Old 01-17-11 | 11:10 AM
  #7  
fietsbob
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Joined: Jun 2010
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From: NW,Oregon Coast

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wrap a piece of paper around the bar and mark it, to get the circumference,
then do the math to convert that measurement, with a ruler, to the diameter.
http://wiki.answers.com/Q/How_do_you..._into_diameter
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