Re: Conversion

Terry,

What Dan says is correct, and the exact statute mile conversion
figure is 1 mile = 1.609344 km

In the UK we still use a good mixture !!

Paul

--- In CAD_CAM_EDM_DRO@y..., "Dan Statman" <dan.statman@r...> wrote:
> Terry,
>
> The correct metric to imperial conversion is 1 inch is EXACTLY
> 25.4000000000000 mm. This is not a rounded off number and has a
> theoretically infinite number of significant digits. The 1.609 km
per mile
> has only 4 sig-fig and is an approximation which is why it changes
depending
> on the precision to which the source reports this value. Use 25.4
mm per
> inch as the exact value and you cannot go wrong.
>
> Finally something I know about to respond to on this list, ;-).
>
> Daniel J. Statman, Statman Designs
> www.statmandesigns.com
>
>
> ----- Original Message -----
> From: "James Owens" <wotisname@l...>
> To: <CAD_CAM_EDM_DRO@y...>
> Sent: Friday, June 21, 2002 6:45 AM
> Subject: [CAD_CAM_EDM_DRO] Conversion
>
>
> > Hi,
> >
> > I'm working on a DRO and am having some confusion over the
conversion of
> > metric units to inches and back again. The device should be able
to read
> > glass scales down to 0.001mm or 1 micron so it is important to
get this
> > right.
> >
> > I have always used 1" = 25.4 mm but on trying to work it out with
a little
> > more accuracy I find that an English mile = 1.609 kilometres or
1" =
> > 25.39457071 mm. but this figure changes depending on who it is
coming
> from.
> >
> > Does the list have any opinions on this.
> >
> > Regards,
> >
> > Terry
> >
> >
> >
> >
> > Addresses:
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