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Old 10-21-13, 02:48 PM
  #11  
Looigi
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Lot's of 18" machinist's steel rules available. That's what I use. Line up one pin centered on 1" and look at the pin at 13". Best to avoid the ends of a ruler.

Agree. It looks like 1/16" to me. Look at the pin just past the 1" mark. The pin off the end will be 12/11 more than that.
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