FWIW, back when the USSR fell apart, the warehouses were emptied and one could buy anything and everything at flea markets. I bought several NIB micrometers and dial indicators for $1 each.
In 1959, both US inch and UK inch were converged to agree with each other. They were some millionths apart. Both were moved by a tiny amount to force that an inch is found from 25.4 mm exactly.
There used to be a "Moscow Inch" and a "Paris Inch" and various other "Inches".
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.