|
Yes, you're right Gene - sorry.
Mike
----- Original Message -----
Sent: Monday, January 06, 2003 5:38
AM
Subject: Millimetres, centimetres, and
decimetres
On Fri, 3 Jan 2003, Mike Joy wrote:
>
> ... my
point is that it is MUCH easier to work with one unit than a
> mixture
of units.
Mike, you mean "...easier to work with only one prefix of the
meter."
> ... Which is easier:- 12mm + 123mm+ 1234mm or 12mm +
12.3cm + 1.234m?
> No building plans here show cm units - only
mm...
> My house is shown on a block size as 20 117 x 40
230.
Mike, the *only* SI "unit" of length in discussion here is the
meter.
Both the cm and the mm are *submultiples* of the meter.
The cm and mm are
*not* "SI units" independent of the meter.
Call
them "submultiples" (not "units") if you accept the authority
of the CGPM
to define SI terminology as documented in the BIPM Brochure.
Otherwise,
you are inventing MJ terminology which deviates from the
SI.
Gene.
|
