News for hackers. Stuff that matters.

A comment on International System of Units overhauled in historic vote. Parent comment

Re:International System of Units overhauled in historic vote by clord on Friday November 16, 2018 @02:48PM (#18471447)
The US units are defined in terms of SI since the Mendenhall Order[0], so they also benefit from this change.

[0]: https://en.wikipedia.org/wiki/Mendenhall_Order

[ Parent | on HN ]
Re:International System of Units overhauled in historic vote by kevin_thibedeau on Friday November 16, 2018 @04:41PM (#18472196)
It wasn't until 1959 that the yard was metricized. This still affects precision machinery manufactured before the changeover.
[ Parent | on HN ]
Re:International System of Units overhauled in historic vote by clord on Friday November 16, 2018 @04:59PM (#18472319)
It was metricized with all the rest before that. What happened in 59 was harmonization with other countries including Canada, who had a different agreement on the metric yard. The older american definition was 1 yard = ​3600/3937 meter. The international metric yard is exactly 0.9144m. (A difference of 0.002mm)
[ Parent | on HN ]