Russia Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Seychelles was US$10 during 2021, according to the United Nations COMTRADE database on international trade. Russia Exports of hydrometers, thermometers, pyrometers, barometers, hygrometers to Seychelles - data, historical chart and statistics - was last updated on June of 2024.