Scientific apparatus and instruments, namely, anemometers, barometers, compasses, GPS sensors, thermometers, hygrometers, precipitation sensors, pyranometers, air quality sensors, electric sensors, meteorological instruments, and digital weather station instruments; surveying apparatus and surveying instruments; measuring apparatus and instruments, namely, anemometers, barometers, compasses, GPS sensors, thermometers, hygrometers, precipitation sensors, pyranometers, air quality sensors, elec...