{"id":7719,"date":"2020-09-20T10:10:02","date_gmt":"2020-09-20T10:10:02","guid":{"rendered":"https:\/\/www.ipq.pt\/metrology-museum\/weights-and-measures-in-portugal\/o-sistema-metrico-decimal\/"},"modified":"2023-02-13T12:47:54","modified_gmt":"2023-02-13T12:47:54","slug":"the-decimal-metric-system","status":"publish","type":"page","link":"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/","title":{"rendered":"The decimal metric system"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container hundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-sizes-top:0px;--awb-border-sizes-bottom:0px;--awb-border-sizes-left:0px;--awb-border-sizes-right:0px;--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-padding-top:0px;--awb-padding-right:0px;--awb-padding-bottom:0px;--awb-padding-left:0px;--awb-margin-top:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:calc( 100% + 0px ) !important;max-width:calc( 100% + 0px ) !important;margin-left: calc(-0px \/ 2 );margin-right: calc(-0px \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\" style=\"--awb-padding-bottom:3%;--awb-bg-size:cover;--awb-width-large:100%;--awb-margin-top-large:0px;--awb-spacing-right-large:0px;--awb-margin-bottom-large:0px;--awb-spacing-left-large:0px;--awb-width-medium:100%;--awb-spacing-right-medium:0px;--awb-spacing-left-medium:0px;--awb-width-small:100%;--awb-spacing-right-small:0px;--awb-spacing-left-small:0px;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none\"><img decoding=\"async\" width=\"2005\" height=\"265\" title=\"header_MM-EN\" src=\"https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-EN.png\" data-orig-src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/header_MM-EN.png\" alt class=\"lazyload img-responsive wp-image-7346\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%272005%27%20height%3D%27265%27%20viewBox%3D%270%200%202005%20265%27%3E%3Crect%20width%3D%272005%27%20height%3D%27265%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-EN-200x26.png 200w, https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-EN-400x53.png 400w, https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-EN-600x79.png 600w, https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-EN-800x106.png 800w, 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fusion-menu hover left no-border\" aria-label=\"Secondary navigation\"><ul id=\"menu-metrology-museum\" class=\"menu\"><li id=\"menu-item-18619\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-18619\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/\"><span class=\"link-text\"> metrology museum<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7520\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7520\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/collectionofthemuseum\/\"><span class=\"link-text\"> Collection of the Museum<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7546\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-7546\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/museum-space\/\"><span class=\"link-text\"> Museum space<\/span><span class=\"arrow\"><\/span><\/a><ul 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menu-item-7583\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/\"><span class=\"link-text\"> Weights and measures in Portugal<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-8313\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-8313\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/\"><span class=\"link-text\"> The first weights and measures<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7605\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7605\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/length-measures\/\"><span class=\"link-text\"> Length measures<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7654\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7654\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/volume-measures\/\"><span class=\"link-text\"> Volume measures<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7653\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7653\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/the-weight-mass\/\"><span class=\"link-text\"> The weight\u00a0(mass)<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7656\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7656\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-first-weights-and-measures\/early-reforms-towards-standardization\/\"><span class=\"link-text\"> Early reforms towards standardization<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><li id=\"menu-item-7718\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-7718\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/metrological-reforms-of-the-modern-era\/\"><span class=\"link-text\"> Metrological reforms of the modern era<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7717\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7717\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/metrological-reforms-of-the-modern-era\/the-manueline-reform\/\"><span class=\"link-text\"> The Manueline reform<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7716\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7716\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/metrological-reforms-of-the-modern-era\/the-reform-of-king-sebastiao\/\"><span class=\"link-text\"> The Reform of King Sebasti\u00e3o<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7715\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7715\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/metrological-reforms-of-the-modern-era\/the-philippine-dynasty\/\"><span class=\"link-text\"> The Philippine Dynasty<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><li id=\"menu-item-7767\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-7767\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/\"><span class=\"link-text\"> The decimal metric system<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7764\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7764\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/creation-of-the-decimal-metric-system\/\"><span class=\"link-text\"> Creation of the decimal metric system<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7763\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7763\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/the-reform-of-king-joao-vi\/\"><span class=\"link-text\"> The reform of King Jo\u00e3o VI<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7762\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7762\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/adoption-and-promotion-of-the-metric-system\/\"><span class=\"link-text\"> Adoption and promotion of the metric system<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-8440\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-8440\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/the-meter-convention\/\"><span class=\"link-text\"> The meter convention<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><li id=\"menu-item-8441\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-8441\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/collaboration-with-nadl\/\"><span class=\"link-text\"> Collaboration with NADL<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7921\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children menu-item-7921\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/\"><span class=\"link-text\"> Other services<\/span><span class=\"arrow\"><\/span><\/a><ul class=\"sub-menu\"><li id=\"menu-item-7920\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7920\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/purchase-of-the-book-weights-and-measures-in-portugal\/\"><span class=\"link-text\"> Purchase of the book &#8220;Weights and measures in Portugal&#8221;<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7919\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7919\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/historical-archive\/\"><span class=\"link-text\"> Historical archive<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-8451\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-8451\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/teaching-materials-museum\/\"><span class=\"link-text\"> Teaching materials<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7918\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7918\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/other-services\/bibliography\/\"><span class=\"link-text\"> Bibliography<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><\/ul><\/li><\/ul><\/nav><\/div><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:2.88%;--awb-width-medium:100%;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-title title fusion-title-1 fusion-sep-none fusion-title-text fusion-title-size-two subtitulo-sh2\" style=\"--awb-text-color:#eeb614;--awb-font-size:20px;\"><h2 class=\"fusion-title-heading title-heading-left fusion-responsive-typography-calculated\" style=\"margin:0;font-size:1em;--fontSize:20;--minFontSize:20;line-height:2;\">THE DECIMAL METRIC SYSTEM<\/h2><\/div><div class=\"fusion-text fusion-text-1 template-1-text\" style=\"--awb-margin-top:20px;\"><p>At the end of the 18th century many disconnected and inconsistent measurement systems existed in Europe, which did not favor trade. Efforts started to find more rational systems and, if possible, with some uniformity that would allow their use by different countries.<\/p>\n<p><span data-contrast=\"auto\">With the French Revolution, these efforts were developed and, after several proposals, in 1791, the\u00a0Assembl\u00e9e\u00a0<em>Nationale<\/em><em>\u00a0<\/em><em>Constituante<\/em><\/span><span data-contrast=\"auto\">\u00a0(National Constituent Assembly) decreed that the length of the Earth&#8217;s meridian quarter, a unit of natural and invariable measure, would be used for the base of the new measurement system, of decimal basis, which came to be called\u00a0<\/span><span data-contrast=\"auto\"><em>m\u00e8tre<\/em><\/span><span data-contrast=\"auto\">.<\/span><\/p>\n<p><span data-contrast=\"auto\">The volume unit was obtained, using a container in the shape of a cube and edges with the length of one tenth of a meter (a cubic decimeter), which came to be called liter and the unit of\u00a0kilogramme\u00a0mass was obtained, filling this same container of distilled water, at 5 degrees\u00a0celsius.<\/span><\/p>\n<p><span data-contrast=\"auto\">At the beginning of the 19th century, in Portugal the systems derived from the reforms of King Manuel I and King Sebasti\u00e3o continued to be used, making it impossible to guarantee a reliable metrological control.<\/span><\/p>\n<p>It was only in 1852 that the Metric System was definitively adopted in Portugal, by Decree of Queen Maria II.<span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<\/div><div class=\"fusion-image-element \" style=\"text-align:right;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-2 hover-type-none\"><img decoding=\"async\" width=\"197\" height=\"250\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27197%27%20height%3D%27250%27%20viewBox%3D%270%200%20197%20250%27%3E%3Crect%20width%3D%27197%27%20height%3D%27250%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/689-5-b_v2.png\" alt class=\"lazyload img-responsive wp-image-7214\"\/><\/span><\/div><div class=\"fusion-text fusion-text-2\"><p>In 1812 the Prince Regent Dom Jo\u00e3o (future King Jo\u00e3o VI) appointed a\u00a0<span data-contrast=\"auto\"><em>Comiss\u00e3o<\/em><em>\u00a0para o Exame dos\u00a0<\/em><em>Forais<\/em><em>\u00a0e Melhoramentos da Agricultura<\/em><\/span><span data-contrast=\"auto\">\u00a0(Commission for the Examination of Forals and Improvements in Agriculture), which recommended the reform of the system of weights and measures. The work, done in collaboration with the\u00a0Academia das\u00a0<em>Ci\u00eancias<\/em><\/span><span data-contrast=\"auto\">\u00a0(Royal Academy of Sciences), resulted in the proposal of a system based on the French\u00a0<\/span><span data-contrast=\"auto\"><em>m\u00e8tre<\/em><\/span><span data-contrast=\"auto\">, but with Portuguese terminology.<\/span><\/p>\n<p><span data-contrast=\"auto\">Thus, in Portugal, the designation for the\u00a0<\/span><span data-contrast=\"auto\"><em>m\u00e8tre<\/em><\/span><span data-contrast=\"auto\">\u00a0was\u00a0<\/span><span data-contrast=\"auto\"><em>vara<\/em><\/span><span data-contrast=\"auto\">, the unit being 1\/10 of the\u00a0<\/span><span data-contrast=\"auto\"><em>vara<\/em><\/span><span data-contrast=\"auto\">\u00a0with the name of\u00a0<\/span><span data-contrast=\"auto\"><em>m\u00e3o<\/em><em>\u00a0<\/em><em>travessa<\/em><\/span><span data-contrast=\"auto\">. The liter would be called\u00a0<\/span><span data-contrast=\"auto\"><em>canada<\/em><\/span><span data-contrast=\"auto\"> and the kilogramme would have the designation of libra (pound).<\/span><\/p>\n<p><span data-contrast=\"auto\">However, this system, of which 300 copies were made to distribute throughout the country, was never used, due to the constant turmoil resulting from the Liberal Revolution, Liberal Wars and popular revolts that characterized the first half of the 19th century.<\/span><\/p>\n<\/div><div class=\"fusion-image-element \" style=\"text-align:left;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-3 hover-type-none\"><img decoding=\"async\" width=\"300\" height=\"129\" src=\"https:\/\/www.ipq.pt\/wp-content\/uploads\/694-1-b_v2.png\" data-orig-src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/694-1-b_v2.png\" alt class=\"lazyload img-responsive wp-image-7216\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27300%27%20height%3D%27129%27%20viewBox%3D%270%200%20300%20129%27%3E%3Crect%20width%3D%27300%27%20height%3D%27129%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.ipq.pt\/wp-content\/uploads\/694-1-b_v2-200x86.png 200w, https:\/\/www.ipq.pt\/wp-content\/uploads\/694-1-b_v2.png 300w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 300px\" \/><\/span><\/div><div class=\"fusion-text fusion-text-3\"><p>The gradual adoption of the system implied the creation of new organisms and a metrological traceability chain. Thus, the\u00a0<span data-contrast=\"auto\"><em>Inspec\u00e7\u00e3o<\/em><em>\u00a0Geral dos Pesos e\u00a0<\/em><em>Medidas<\/em><em>\u00a0do Reino<\/em><\/span><span data-contrast=\"auto\">\u00a0(General Inspection of Weights and Measures of the Kingdom) was created, which stayed with the standards of 1st class. The 2nd class would be sent to the District&#8217;s Weights and Measures Inspections and the 3rd class would stay with the city councils.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Despite several setbacks, the \u201cnew\u201d system became to be gradually used.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:true,&quot;134233118&quot;:true,&quot;201341983&quot;:0,&quot;335559740&quot;:240}\">\u00a0<\/span><\/p>\n<\/div><div class=\"fusion-image-element \" style=\"text-align:right;--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-4 hover-type-none\"><img decoding=\"async\" width=\"186\" height=\"250\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27186%27%20height%3D%27250%27%20viewBox%3D%270%200%20186%20250%27%3E%3Crect%20width%3D%27186%27%20height%3D%27250%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/Padrao_Massa_v1.png\" alt class=\"lazyload img-responsive wp-image-7218\"\/><\/span><\/div><div class=\"fusion-text fusion-text-4\"><p>As several countries were already using this system, it became necessary to ensure uniform measures. In 1869, the French government invited numerous countries to participate in an &#8220;International Metro Convention&#8221;.<\/p>\n<p><span data-contrast=\"auto\">17 countries participated, including Portugal.<\/span><\/p>\n<p><span data-contrast=\"auto\">The Metro Convention created the various bodies responsible for managing metrology at the international level that still exist (BIPM, CGPM and CIPM) and oversee metrology\u00a0at international level.\u00a0<\/span><\/p>\n<\/div><div class=\"fusion-text fusion-text-5 template-1-text\"><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":58,"featured_media":0,"parent":7572,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"footnotes":""},"class_list":["post-7719","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/users\/58"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/comments?post=7719"}],"version-history":[{"count":11,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7719\/revisions"}],"predecessor-version":[{"id":18423,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7719\/revisions\/18423"}],"up":[{"embeddable":true,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7572"}],"wp:attachment":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/media?parent=7719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}