John McEwen wrote:
> Can anyone suggest other devices in common use which have remained true to
> their first principles since inception. I would suggest that 50 years
> should be the minimum time consideration. I don't include the concept as
> the basis but rather the actual mechanism.
How about the floating mine used in many seas during various wars?
They were
used during the Civil War. Basically, the design has stayed unchanged, but the
materials have become more high-tech...
--
Michael S. Lishego
St. Andrews Presbyterian College
Elementary Education Major,
English Minor, Class of 1999
R.A. of Winston-Salem Hall
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