Editing Metre Convention (section)

=== Saint Petersburg Academy ===
[[Ferdinand Rudolph Hassler]]'s metrological and geodetic work also had a favourable response in Russia.<ref name="Parr-2006" /><ref name="Cajori-1921" /> In 1869, the [[Russian Academy of Sciences|Saint Petersburg Academy of Sciences]] sent to the French Academy of Sciences a report drafted by [[Otto Wilhelm von Struve]], who secured, in 1860, the co-operation of Prussia, Belgium, France and England to the measurement of the European arc of parallel in 52° latitude,<ref name=":11" /><ref name="Clarke-1867" /> [[Heinrich von Wild]], the Swiss born director of the Central Geophysical Observatory in [[Saint Petersburg]],<ref>{{Cite web |date=2015-12-08 |title=History of IMO |url=https://public-old.wmo.int/en/about-us/who-we-are/history-IMO |url-status=dead |archive-url=https://web.archive.org/web/20231218170901/https://public-old.wmo.int/en/about-us/who-we-are/history-IMO |archive-date=December 18, 2023 |access-date=2023-10-12 |website=public.wmo.int |language=en}}</ref> and [[Moritz von Jacobi]], whose theorem has long supported the assumption of an ellipsoid with three unequal axes for the figure of the Earth,<ref name=":9" /> inviting his French counterpart to undertake joint action to ensure the universal use of the [[metric system]] in all scientific work.<ref name="Guillaume-1916" /> The [[French Academy of Sciences]] and the [[Bureau des Longitudes]] in Paris drew the attention of the French government to this issue. In November 1869, [[Napoleon III]] issued invitations to join the International Metre Commission in Paris.<ref name=":8" /><ref>{{Cite web |title=BIPM – International Metre Commission |url=https://www.bipm.org/en/measurement-units/history-si/international-metre-commission.html |url-status=dead |archive-url=https://web.archive.org/web/20180109182826/https://www.bipm.org/en/measurement-units/history-si/international-metre-commission.html |archive-date=9 January 2018 |access-date=9 January 2018 |website=bipm.org}}</ref>