Ok by me, if Bill were inclined to adopt the idea.

Jim Elwell

At 2/17/2003, 06:23 PM, kilopascal wrote:
2003-02-17

Instead of "precise" and "typical, what about "actual" and "practical"?

John


----- Original Message -----
From: "Jim Elwell" <[EMAIL PROTECTED]>
To: "U.S. Metric Association" <[EMAIL PROTECTED]>
Sent: Monday, 2003-02-17 10:18
Subject: [USMA:24876] RE: Definitions of US non-metric units


> At 2/16/2003, 02:51 PM, Bill Potts wrote:
> >Dennis Brownridge and I have anticipated that very need, Terry.
> >
> >Just go to http://metric1.org/nonsi.htm.
> >
> >Bill Potts, CMS
> >Roseville, CA
> >http://metric1.org [SI Navigator]
>
> Bill:
>
> As always, there is more to your website than I realized. I've bookmarked
> this non-metric-unit conversion page for reference, and will be referring
> my (captive) students to it.
>
> However, I'm puzzled by the widely varying precision in the conversion
> factors. You say that precision is shown as "appropriate," but I can't see
> why cubic foot deserves 8 significant digits while gallon gets only 4.
> Fluid ounce gets 5, cup gets 3 (or 2).
>
> I would suggest two columns: "precise" (with maybe six digits for
> everything) and "typical" (rounded as appropriate). That way I can have a
> "cup" as 240 mL for typical use, or 236.59 mL if I want the more precise
value.
>
> Actually cup illustrates the problem: there are some listserver members
who
> would suggest it should be rounded to 250 for typical use, not 240, but if
> only the rounded value is shown, it makes it difficult for the user to
> round as appropriate to their use.
>
>
> Jim Elwell, CAMS
> Electrical Engineer
> Industrial manufacturing manager
> Salt Lake City, Utah, USA
> www.qsicorp.com
>



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