At 09:04 PM 11/19/01 +0100, you wrote:
>This unit 'ounces of copper', does it apply to
>1)square foot ?
>2)square yard ?
>3)square meter ?

square foot.

>European thicknesses are 35, 70, 105, 150, 200 and 300 micrometer.
>I just wondered how they relate.

One ounce of copper is about 1.4 mils thick. That is 35 micrometers. I'm 
surprised that half-ounce copper, 17.5 micrometers, was not in that list.


>One ounce is 28 grams, isn't it ?

close enough. as I recall, 1 pound is 453.59 grams, one pound is 16 ounces, 
so 1 ounce is 28.3 grams.

[EMAIL PROTECTED]
Abdulrahman Lomax
Easthampton, Massachusetts USA


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