Gabon Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Cameroon was US$83 during 2018, according to the United Nations COMTRADE database on international trade. Gabon Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Cameroon - data, historical chart and statistics - was last updated on May of 2024.