Malawi Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Mauritania was US$507 during 2018, according to the United Nations COMTRADE database on international trade. Malawi Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Mauritania - data, historical chart and statistics - was last updated on June of 2024.