Jean Brunner displayed the Ibáñez-Brunner apparatus at the Exposition Universelle of 1855. Copies of the Spanish standard were also made for France and Germany. These standards would be used for the most important operations of European geodesy. Indeed, the southward extension of Paris meridian's triangulation by Pierre Méchain (1803-1804), then François Arago and Jean-Baptiste Biot (1806-1809) had not been secured by any baseline measurement in Spain.