Check this blog is now posted online: http://www.csemag.com/single-article/hard-and-soft-metric-it-s-actually-conversion-and-substitution/72254fd4f2a649708febe1f7992ae317.html
It's from Consulting-Specifying Engineer and Pure Power CFE Media LLC (I have no affiliation) Howard Ressel Project Design Engineer NYSDOT 1530 Jefferson Road Rochester, NY 14623 585 272-3372 43,560 square feet in an acre 5280 feet in a mile 16 ounces in a pound 128 ounces in a gallon 23 confused kids in a class What could be simpler?