New Caledonia Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Singapore was US$38 during 2015, according to the United Nations COMTRADE database on international trade. New Caledonia Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Singapore - data, historical chart and statistics - was last updated on May of 2024.