Re: Conversion

Hi,

I looked it up and I got 25.399999999999987300000000000006 mm equals
1". Seems 2.54 is accurate to 16 places.

Mariss

--- In CAD_CAM_EDM_DRO@y..., "James Owens" <wotisname@l...> wrote:
> 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