>The columns I see don't have headings. What is the significance of the two >"inches" columns and two "millimeters" columns? Yes, I see they are >different, but what are they and what is the source? > >Terry Farrell It means that if the wire was made to US specifications, #13 wire would be 0.031", or 0.787mm, whereas metric wire #13 gage would be 0.0305", and 0.775mm. Newton Hunt chased these down for us and posted them a few years back. Ron N
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