Cameroon Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Togo was US$90 during 2020, according to the United Nations COMTRADE database on international trade. Cameroon Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Togo - data, historical chart and statistics - was last updated on May of 2024.