Spain Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Liberia was US$3.8 Thousand during 2022, according to the United Nations COMTRADE database on international trade. Spain Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Liberia - data, historical chart and statistics - was last updated on May of 2024.