{"id":8335,"date":"2020-09-21T16:01:04","date_gmt":"2020-09-21T16:01:04","guid":{"rendered":"https:\/\/www.ipq.pt\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/a-convencao-do-metro\/"},"modified":"2023-02-13T12:50:58","modified_gmt":"2023-02-13T12:50:58","slug":"the-meter-convention","status":"publish","type":"page","link":"https:\/\/www.ipq.pt\/en\/metrology-museum\/weights-and-measures-in-portugal\/the-decimal-metric-system\/the-meter-convention\/","title":{"rendered":"The meter convention"},"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:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 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:1.92%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:1.92%;--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-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\" src=\"https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM.png\" data-orig-src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/header_MM.png\" alt class=\"lazyload img-responsive wp-image-4466\" 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-200x26.png 200w, https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-400x53.png 400w, https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-600x79.png 600w, https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-800x106.png 800w, https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM-1200x159.png 1200w, https:\/\/www.ipq.pt\/wp-content\/uploads\/header_MM.png 2005w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 1024px) 100vw, (max-width: 640px) 100vw, 2005px\" \/><\/span><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--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-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1420.64px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_3 1_3 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:33.333333333333%;--awb-margin-top-large:0px;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:0px;--awb-spacing-left-large:5.76%;--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-widget fusion-widget-element fusion-widget-area fusion-content-widget-area wpWidget-1 menu_v_template1 fusion_widget_vertical_menu no-divider-color\" style=\"--awb-fusion-border-size:0px;--awb-fusion-border-style:solid;\"><div class=\"widget avada_vertical_menu\"><style>#fusion-vertical-menu-widget-avada-vertical-menu-widget-1-nav ul.menu li a {font-size:14px;}<\/style><nav id=\"fusion-vertical-menu-widget-avada-vertical-menu-widget-1-nav\" class=\"fusion-vertical-menu-widget 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 class=\"sub-menu\"><li id=\"menu-item-7568\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7568\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/entrance-room\/\"><span class=\"link-text\"> Entrance room<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7547\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7547\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/museum-space\/permanent-exhibition\/\"><span class=\"link-text\"> Permanent exhibition<\/span><span class=\"arrow\"><\/span><\/a><\/li><li id=\"menu-item-7569\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-7569\"><a href=\"https:\/\/www.ipq.pt\/en\/metrology-museum\/museum-space\/other-spaces\/\"><span class=\"link-text\"> Other spaces<\/span><span class=\"arrow\"><\/span><\/a><\/li><\/ul><\/li><li id=\"menu-item-7583\" class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-has-children 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 METER CONVENTION<\/h2><\/div><div class=\"fusion-text fusion-text-1 template-1-text\" style=\"--awb-margin-top:20px;\"><p><span data-contrast=\"auto\"><img decoding=\"async\" class=\"lazyload alignright size-fusion-200 wp-image-6868\" src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/Foto_16_CIPM_1894_v1-200x147.png\" data-orig-src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/Foto_16_CIPM_1894_v1-200x147.png\" alt=\"\" width=\"200\" height=\"147\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27200%27%20height%3D%27147%27%20viewBox%3D%270%200%20200%20147%27%3E%3Crect%20width%3D%27200%27%20height%3D%27147%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.ipq.pt\/wp-content\/uploads\/Foto_16_CIPM_1894_v1-200x147.png 200w, https:\/\/www.ipq.pt\/wp-content\/uploads\/Foto_16_CIPM_1894_v1-300x220.png 300w, https:\/\/www.ipq.pt\/wp-content\/uploads\/Foto_16_CIPM_1894_v1-400x293.png 400w, https:\/\/www.ipq.pt\/wp-content\/uploads\/Foto_16_CIPM_1894_v1.png 450w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 200px) 100vw, 200px\" \/>In the second half of the 19th century, several countries, including Portugal, had adopted the metric system and were trying to promote its widespread use, replacing the old systems of weights and measures.<\/span><\/p>\n<p><span data-contrast=\"auto\">On the occasion of\u00a0the Universal Exhibition in Paris, in 1867,\u00a0a large number of\u00a0scientists formed a &#8220;Committee on Weights and Measures and Currency&#8221; that aimed to standardize measures. In 1869, the French government invited numerous countries to be represented in Paris in an &#8220;International Metro Commission&#8221;.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<\/div><div class=\"fusion-text fusion-text-2\"><p><span data-contrast=\"auto\"><img decoding=\"async\" class=\"lazyload size-fusion-200 wp-image-6860 alignleft\" src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/convencao_metro_v1-200x122.png\" data-orig-src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/convencao_metro_v1-200x122.png\" alt=\"\" width=\"200\" height=\"122\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27200%27%20height%3D%27122%27%20viewBox%3D%270%200%20200%20122%27%3E%3Crect%20width%3D%27200%27%20height%3D%27122%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.ipq.pt\/wp-content\/uploads\/convencao_metro_v1-200x122.png 200w, https:\/\/www.ipq.pt\/wp-content\/uploads\/convencao_metro_v1-300x183.png 300w, https:\/\/www.ipq.pt\/wp-content\/uploads\/convencao_metro_v1-400x244.png 400w, https:\/\/www.ipq.pt\/wp-content\/uploads\/convencao_metro_v1.png 450w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 200px) 100vw, 200px\" \/>Finally, on May 20, 1875, representatives from 17 countries signed the Metro Convention in Paris.<\/span><\/p>\n<p><span data-contrast=\"auto\">The Convention created several bodies responsible for metrology management at the international level:<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<ul>\n<li data-leveltext=\"\u2022\" data-font=\"Arial\" data-listid=\"5\" aria-setsize=\"-1\" data-aria-posinset=\"0\" data-aria-level=\"1\"><span data-contrast=\"none\">BIPM &#8211; Bureau International des\u00a0Poids\u00a0et\u00a0Mesures, with the aim of establishing new metric standards, preserving international prototypes and conducting the necessary comparisons to ensure uniformity of measurements from all over the\u00a0world;<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\u2022\" data-font=\"Arial\" data-listid=\"5\" aria-setsize=\"-1\" data-aria-posinset=\"0\" data-aria-level=\"1\"><span data-contrast=\"none\">CGPM &#8211; General Conference on Weights and Measures, which meets every 4\u00a0years;<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\u2022\" data-font=\"Arial\" data-listid=\"5\" aria-setsize=\"-1\" data-aria-posinset=\"0\" data-aria-level=\"1\"><span data-contrast=\"none\">CIPM &#8211; International Committee of Weights and Measures, made up of 14 personalities on an individual basis (in 1921 they became 18).<\/span><\/li>\n<\/ul>\n<p>Portugal was one of the countries that participated in the Metro Convention, having been represented by Jos\u00e9 da Silva Mendes Leal, a pair of the kingdom and plenipotentiary minister in Paris.<\/p>\n<p><span data-contrast=\"auto\">Portugal was represented in the first 3 CGPM meetings by Count Henrique. de Macedo, plenipotentiary minister in Madrid.<\/span><span data-ccp-props=\"{\">\u00a0<\/span><\/p>\n<\/div><div class=\"fusion-text fusion-text-3\"><p><span class=\"TextRun SCXW105546359 BCX9\" lang=\"EN-US\" xml:lang=\"EN-US\" data-contrast=\"auto\"><span class=\"NormalTextRun SCXW105546359 BCX9\"><img decoding=\"async\" class=\"lazyload alignright size-fusion-200 wp-image-6866\" src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/Padrao_metro_kilograma_v1-200x130.png\" data-orig-src=\"https:\/\/storagewebsiteipq.blob.core.windows.net\/website\/Padrao_metro_kilograma_v1-200x130.png\" alt=\"\" width=\"200\" height=\"130\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27200%27%20height%3D%27130%27%20viewBox%3D%270%200%20200%20130%27%3E%3Crect%20width%3D%27200%27%20height%3D%27130%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.ipq.pt\/wp-content\/uploads\/Padrao_metro_kilograma_v1-200x130.png 200w, https:\/\/www.ipq.pt\/wp-content\/uploads\/Padrao_metro_kilograma_v1-300x195.png 300w, https:\/\/www.ipq.pt\/wp-content\/uploads\/Padrao_metro_kilograma_v1-400x260.png 400w, https:\/\/www.ipq.pt\/wp-content\/uploads\/Padrao_metro_kilograma_v1.png 450w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 200px) 100vw, 200px\" \/>At the first CGPM, which took place in 1889, the new metro and kilogram prototypes were approved and copies that would be distributed by member countries were randomly selected, with Portugal keeping copies no. 10,\u00a0<\/span><span class=\"AdvancedProofingIssue SCXW105546359 BCX9\">both of the metro<\/span><span class=\"NormalTextRun SCXW105546359 BCX9\"> and the kilogram.<\/span><\/span><\/p>\n<\/div><div class=\"fusion-text fusion-text-4 template-1-text\"><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":58,"featured_media":0,"parent":7719,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"footnotes":""},"class_list":["post-8335","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/8335","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=8335"}],"version-history":[{"count":11,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/8335\/revisions"}],"predecessor-version":[{"id":18439,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/8335\/revisions\/18439"}],"up":[{"embeddable":true,"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/pages\/7719"}],"wp:attachment":[{"href":"https:\/\/www.ipq.pt\/en\/wp-json\/wp\/v2\/media?parent=8335"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}