Well, maybe, the metric system was invented in 1799 according to wikipedia, so unlikely

“It’s pre-roman numerals”

No. ]]>

See: http://www.heathkit-museum.com/computers/hvmec-1.shtml

]]>the method displayed above is much more practical for directly measuring solid objects rather than just closed plane curves. ]]>

http://en.wikipedia.org/wiki/Planimeter

Pretty clever gizmo.

]]>FIFY. :-)

]]>Take the limit of that function as the number of strips approaches infinity, and you will have invented the integral. Calculus!

]]>http://boingboing.net/2011/03/09/using-cams-to-solve.html ]]>