Dear John,
In this article http://www.metricationmatters.com/docs/PageBordersInchesORmillimetres.pdf
I used square millimetres quite successfully, I think, for
comparative purposes of the working area available square millimetres
work just fine – and without fractions.
Cheers,
Pat Naughtin
Author of the ebook, Metrication Leaders Guide, that you can obtain
from http://metricationmatters.com/MetricationLeadersGuideInfo.html
PO Box 305 Belmont 3216,
Geelong, Australia
Phone: 61 3 5241 2008
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On 2010/02/01, at 18:47 , John Frewen-Lord wrote:
I believe that the centimeter does have a place in everyday life.
We need to think not just in linear terms, but in areas and volumes
as well.
Consider an area 400 mm x 200 mm. Area = 80 000 mm2 - not a
practical number. Or else 0.4 m x 0.2 m - 0.08 m2. Equally
impractical. But 40 cm x 20 cm = 800 cm2 - quite usable. Only when
you start getting to much bigger areas do you need to think in terms
of m2.
With volumes, the numbers become even more impractical if something
between the millimeter and the meter is not used.
But consider this little scenario. 1 cm3 is equal to 1 mL. 1000
cm3 = 1 L. Which weighs (or has a mass of) 1 kg. Neat, and very
practical for everyday use.
I agree that industrial and construction sites should only use the
millimeter. When I worked in the construction industry as a
construction cost consultant, I only ever used mm. And that is how
it should be in those industries.
John F-L
----- Original Message -----
From: Harry Wyeth
To: U.S. Metric Association
Sent: Monday, February 01, 2010 3:45 AM
Subject: [USMA:46543] "Go Metric" bumper sticker; centimeters
It has been years since I have seen a "Go Metric" bumper sticker,
but there was one on a silver Subaru with a ski rack driving
downhill on I-80 in California today. Could it belong to one of our
readers?
Aren't these bumper stickers sold by the USMA?
On centimeters: They are really useful for measuring ski lengths and
bicycle tube lengths. No one refers to "1700 mm" skis or a "490 mm"
seat tube on a bicycle.
HARRY WYETH
