{"id":287,"date":"2010-02-01T11:02:46","date_gmt":"2010-02-01T11:02:46","guid":{"rendered":"http:\/\/localhost:8888\/DWCWP\/?page_id=287"},"modified":"2012-02-15T13:34:45","modified_gmt":"2012-02-15T13:34:45","slug":"gewichtsmaten","status":"publish","type":"page","link":"https:\/\/dwc.knaw.nl\/en\/biografie\/christiaan-huygensweb\/eenheden\/gewichtsmaten\/","title":{"rendered":"Units of weight"},"content":{"rendered":"<p>Just like the measures of length, the 17th-century European measures of weight had been derived from the old Roman examples.<\/p>\n\n<p>The Roman system was devised as follows:<\/p>\n\n<ul>\n    <li>scrupulum (1\/4 sextula) &#8211; 1.14 gr<\/li>\n    <li>sextula (1\/6 uncia) &#8211; 4.55 gr<\/li>\n    <li>uncia (1\/12 libra) &#8211; 27.29 gr<\/li>\n    <li>semis\/semissis (1\/2 libra) &#8211; 163.73 gr<\/li>\n    <li>libra\/as &#8211; 327.45 gr<\/li>\n<\/ul>\n\n<p>In Amsterdam the following measures have been in use:<\/p>\n\n<ul>\n    <li>aas (1\/32 engels) &#8211; 0.04825 gr<\/li>\n    <li>engels (1\/10 lood) &#8211; 1.54403 gr<\/li>\n    <li>lood (1\/2 once) &#8211; 15.44032 gr<\/li>\n    <li>once (1\/16 pond) &#8211; 30.88065 gr<\/li>\n    <li>pond &#8211; 494.09040 gr<\/li>\n<\/ul>\n\n<p>In The Hague a somewhat different set was used:<\/p>\n\n<ul>\n    <li>vierde wichtje (1\/4 wichtje) &#8211; 0.917 gr<\/li>\n    <li>wichtje (1\/4 lood) &#8211; 3.700 gr<\/li>\n    <li>lood (1\/32 pond) &#8211; 14.679 gr<\/li>\n    <li>pond &#8211; 469.728 gr<\/li>\n<\/ul>\n\n<p>For medical usage also was used in The Netherlands:<\/p>\n\n<ul>\n    <li>grein (1\/20 scrupel) &#8211; 0.0641 gr<\/li>\n    <li>scrupel (1\/3 drachma) &#8211; 1.2817 gr<\/li>\n    <li>drachma (1\/8 once) &#8211; 3.8451 gr<\/li>\n    <li>once (1\/12 pond) &#8211; 30.7605 gr<\/li>\n    <li>pond &#8211; 369.1260 gr<\/li>\n<\/ul>\n\n<p>French weights were:<\/p>\n\n<ul>\n    <li>grain (1\/24 denier) &#8211; 0.0531 gr<\/li>\n    <li>denier (1\/3 gros) &#8211; 1.2748 gr<\/li>\n    <li>gros (1\/8 once) &#8211; 3.8243 gr<\/li>\n    <li>once (1\/8 marc) &#8211; 30.5941 gr<\/li>\n    <li>marc (1\/2 livre) &#8211; 244.7529 gr<\/li>\n    <li>livre &#8211; 489.5058 gr<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Just like the measures of length, the 17th-century European measures of weight had been derived from the old Roman examples. The Roman system was devised as follows: scrupulum (1\/4 sextula) &#8211; 1.14 gr sextula (1\/6 uncia) &#8211; 4.55 gr uncia (1\/12 libra) &#8211; 27.29 gr semis\/semissis (1\/2 libra) &#8211; 163.73 gr libra\/as &#8211; 327.45 gr [&hellip;]<\/p>","protected":false},"author":4,"featured_media":0,"parent":68,"menu_order":2,"comment_status":"open","ping_status":"open","template":"","meta":{"_links_to":"","_links_to_target":""},"_links":{"self":[{"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/pages\/287"}],"collection":[{"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/comments?post=287"}],"version-history":[{"count":3,"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/pages\/287\/revisions"}],"predecessor-version":[{"id":2480,"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/pages\/287\/revisions\/2480"}],"up":[{"embeddable":true,"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/pages\/68"}],"wp:attachment":[{"href":"https:\/\/dwc.knaw.nl\/en\/wp-json\/wp\/v2\/media?parent=287"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}