UCLAN wrote:
Converter boxes already exist in the $50-$60 range.

I've seen a lot of people say this, and every time I've asked, not one
has been able to point me to an ad for one or a store where one could be
had.

--
One meter, to within 0.0125% accuracy (off by just under .005 inches):
Three feet
Three inches
Three eights of an inch