From: Jon Hanna (jon@hackcraft.net)
Date: Tue Jan 26 2010 - 15:55:22 CST
Rick McGowan wrote:
> One question I have here, before we go off to suggest adding these.
Does anyone have evidence that 2-em and/or 3-em dash were ever produced
in metal (hot or cold), as distinct pieces from the 1-em dash? (This is
a question. I'm not stating a proposed requirement.)
Funnily enough, given that this thread started with reference to the
15th edition of the Chicago Manual of Style, we can find evidence of in
the 4th edition:
"240. Two- and three-em quads are multiples of the above,
cast in one block of type-metal. Two- and three-em
dashes are dashes the width of 2- and 3-em quads,
respectively."
http://www.archive.org/stream/manualofstylebei00univrich/manualofstylebei00univrich_djvu.txt
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