T'other way, Bill. The yard is now (as of 1959) defined as 0.9144 m
exactly. Feet and inches are derived from that. This is what annoyed
surveyors and resulted in the definition of a survey foot as being the
previous foot (1200/3937 m) and the statute mile is 5280 survey feet.

Jim

Bill Potts wrote:
> 
> However, the inch is defined as 25.4 mm (or, if you prefer, 2.54 cm). Feet
> and yards are derivations of that definition.
> 
> An inch is not legal unless it measures exactly 25.4 mm.
> 
> Bill Potts, CMS
> Roseville, CA
> http://metric1.org [SI Navigator]
> 
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
> > Behalf Of mojo
> > Sent: April 18, 2001 11:23
> > To: U.S. Metric Association
> > Subject: [USMA:12298] RE: Who wants to be a millionaire metric question
> >
> >
> > >What is the only unit of measurement for length approved by the
> > US Congress
> > since 1867?
> > >
> > >A:inch;
> > >B:foot;
> > >C:yard;
> > >D:meter
> >
> > I'm not sure this question makes any sense in a common law (vs civil law)
> > context. I believe the law actually states that no contract can
> > be considered
> > invalid for the sole reason that it uses metric units. Inches,
> > feet, and yards
> > are all "approved" by their common acceptance, by the precedent of their
> > acceptable use in contracts.
> >
> >

-- 
James R. Frysinger                  University/College of Charleston
10 Captiva Row                      Dept. of Physics and Astronomy
Charleston, SC 29407                66 George Street
843.225.0805                        Charleston, SC 29424
http://www.cofc.edu/~frysingj       [EMAIL PROTECTED]
Cert. Adv. Metrication Specialist   843.953.7644

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