Originally Posted by
Robert Culver
Measuring it with my caliper I come up with 4.60 on the metric scale and 3/16 on the normal fraction scale.
3/16 is the nominal size of a #10 screw.
I was also under the missguided idea that England converted all their measurements to metric. When I was more inclined to making a living working on bicycles and automobiles it was all the rage. But that seems to have been forestalled for now. Europe was less unified in things at that time and some of the different countries used different thread standards on some parts.
jtk
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