sweettractors
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The USA is adopting the Metric system and phasing out the SAE.
This started back int he early 70's and will be completed in the year 1979.
In the 70's, there was an expression being stated "Think metric". Some U.S. road signs of distances to cities started showing kilometers next to miles. They both appear to have become history long ago.
only the U.S. and Burundi have not officially adopted the metric system.
When I was doing tool and die work in the sixties and seventies, everything was SAE, I quit in 1980 and did not get into metrics until the last 10 years or so. It is really simplier than SAE, once I understood the concept. Ken Sweet