Singapore Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Vanuatu was US$680 during 2022, according to the United Nations COMTRADE database on international trade. Singapore Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Vanuatu - data, historical chart and statistics - was last updated on June of 2024.