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Remember this great article about a German machinery company opening a factory in the US and not being able to find candidates that knew what a micron was. CNC needs to be precise.

They started hiring veterans of the US forces, because those guys at least got trained on heavy, expensive machinery.

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If they really need to be that precise, perhaps they should be using only the standard SI units. They should have asked about micrometers (µm). "Micron (µ)" has been deprecated since 1935, and was revoked entirely in 1967.

US schools typically do not teach the archaic or old-fashioned terms, as they won't be on the standardized tests.

It would be similar to a US company going to Germany and looking for people that knew what a "mil" was. (It's 0.001 inch.)

or a thou :-)

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