e/Metric typographic units

Information
has gloss	eng: Metric typographic units have been devised and proposed several times to overcome the various traditional point systems. After the French revolution of 1789 one popular proponent of a switch to metric was Didot , who had been able to standardise the continental European typographic measurement few decades earlier. The conversion did not happen, though. The Didot point was metrically redefined as m in 1879 by Berthold.
lexicalization	eng: Metric typographic units
instance of	(noun) the quotient of two rational numbers fraction