Ken Knoblauch <knoblauch <at> lyon.inserm.fr> writes:
>
> >I remember that my father had a French curve: it was a plastic template
> >used for drawing which had several smooth edges of varying curvature.
Yes. These were used by graphic artists, among others.
Some pictures of these are posted at
http://mathworld.wolfram.com/FrenchCurve.html
Along with a cute anecdote about the use of the French curve by physicist
Richard Feynman.
[ rest deleted ]
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