Sri Lanka Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Oman was US$251 during 2010, according to the United Nations COMTRADE database on international trade. Sri Lanka Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Oman - data, historical chart and statistics - was last updated on June of 2024.