About 1965 I was working as a draftsman at a Hewlett-Packard plant and was in a lab setting with both electrical and mechanical engineers. One day a newly-hired mechanical engineer asked me the following question: 'How many threads per inch are there on a 4-40 screw?' I didn't laugh or fall off my stool but managed, with a straight face, to say 'I don't know, go ask the boss!' and this guy was an engineer???? :shock: The boss did NOT laugh! :lol:
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Today's Featured Article - Tractor Proflie: John Deere Model R - by Staff. The John Deere Model R, the last of the lettered tractors, was the first diesel-powered tractor produced by John Deere with a gasoline starting engine. It was also the first tractor they produced that had an optional steel cab. The photo above shows the tractor w
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