>> ... The good news is that the Congress of the United States passed a law in 1865 that we were going metric. This is one of those occasions that the United States is not in a hurry to implement a change.
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>Well, I understand the inch, etc., are defined in terms of the meter. So in a sense...
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>However, what is really needed is to use the SI in daily life.
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>>One arguement is from the American Society of Industrial Engineers and is related to manufacturing - and a specific is screw threads. English threads are stronger than metric. That is a matter of pitch, threads per mm or inch, etc.
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>I am not sure I understand: is that an argument against or in favor of the SI?
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>Hilmar.

Hilmar;

The ASIE is a powerful group and has lobbyists who argue to retain the English system. Any argument that is valid will be used. As for the practical matter of implementation of the metric system it would allow the United States to be in agreement with the vast majority of the world. That in itself should be reason enough for the United States to embrace the metric system.

In a democracy such as ours what is “right” is sometimes influenced by other concerns. It boils down to politics, money and power. Conversion from the English to metric measurment systems is something that will not happen too quickly IMO.

Tom