International adoption Metric system
areas annexed france during napoleonic era first inherit metric system. in 1812, napoleon introduced system known mesures usuelles, used names of pre-metric units of measure, defined them in terms of metric units – example, livre metrique (metric pound) 500 g , toise metrique (metric fathom) 2 metres. after congress of vienna in 1815, france lost territories had annexed; some, such papal states reverted pre-revolutionary units of measure, others such baden adopted modified version of mesures usuelles, france kept system of measurement intact. in 1817, netherlands reintroduced metric system, used pre-revolutionary names—for example 1 centimetre became duim (thumb), ons (ounce) became 100 g , on. german states adopted similar systems , in 1852 german zollverein (customs union) adopted zollpfund (customs pound) of 500 g intrastate commerce. in 1872 newly formed german empire adopted metric system official system of weights , measures , newly formed kingdom of italy...