Somewhere on that page someone claims that the 'metric' inch was invented by the Soviets, and that is was 25.4 mm exactly. I have read that the ' metric' inch was originally the Canadian one. The Soviet Union used 25 mm modules for computer hardware where the US used the inch. The claim that ISO standardized the 'metric' inch is right when it means the unit of 1959 -25.4 mm- that was indeed also standardized by ISO, wrong if he thinks that ISO standardized a 25 mm inch.
Han Historian of Dutch Metrication, Nijmegen, The Netherlands
