Zambia Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to United States was US$177 during 2015, according to the United Nations COMTRADE database on international trade. Zambia Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to United States - data, historical chart and statistics - was last updated on May of 2024.