Finland adopted metric system 140 years ago

Finland began its official transition to the metric system 140 years ago, following a decree issued in July 1886 by Tsar Alexander III of Russia, who was also the Grand Duke of Finland at the time, reports Yle.

The decree required Finland to obtain the most precise reference models of the metre and kilogram from the International Bureau of Weights and Measures in Paris. The new units were first introduced in postal and customs offices, railways, and pharmacies starting in early 1887.

Old measurements such as inches, feet, and ells were banned in trade after a transition period ending in 1892, with violations punishable by fines of 20–50 markka.

The decree followed the 1875 Metre Convention, which imperial Russia had joined. After gaining independence, Finland formally acceded to the treaty in 1921.