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- Sep 5, 2013
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This is intriguing. I ran into two references using fourteenth of an inch, both are excerpts from old books.
The first, from 1828 Franklin Journal and American Mechanics Magazine, uses it in the context of "... twelfth or fourteenth of an inch in thickness..."
The second, from somewhat later 1847 A Treatise on the Steam Engine, in the context of scale as in "...Scale three fourteenths inch -- (per) foot..."
Perhaps just an archaic method before more standardized systems? Use whatever you want if it's convenient, type thing. Much like thread pitches before the standards came in to general use?
-frank
The first, from 1828 Franklin Journal and American Mechanics Magazine, uses it in the context of "... twelfth or fourteenth of an inch in thickness..."
The second, from somewhat later 1847 A Treatise on the Steam Engine, in the context of scale as in "...Scale three fourteenths inch -- (per) foot..."
Perhaps just an archaic method before more standardized systems? Use whatever you want if it's convenient, type thing. Much like thread pitches before the standards came in to general use?
-frank