On Jul 12, 8:06 pm, "Cy Galley" wrote:
The Funk used that size turnbuckle.
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Lotsa planes did. 12-28 turnbuckle barrels are AN155-21's. But this
one appears to be bronze instead of brass, has a hex center section
that accepts a 7/116" wrench and is a tad less than 2-1/2" long, about
a quarter inch longer than a standard AN155.

I've never seen anything like it.

-R.S.Hoover