Unfortunately, devices stopped actually making "mm" a millimeter long a while ag... | Hacker News

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JoshTriplett on March 13, 2012 | parent | context | favorite | on: CSS px is an Angular Measurement

Unfortunately, devices stopped actually making "mm" a millimeter long a while ago; for instance, various mobile devices scale "mm" by a factor of 2 because they assume that sites don't actually want a physical unit of measure.

kickingvegas on March 13, 2012 [–]

If you don't mind my asking: which devices?

JoshTriplett on March 13, 2012 | [–]

Take a look at http://robert.ocallahan.org/2010/08/css-units-changes-landed... for some of the details.

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