Accurate Humidity Measurement 3.9 inches (10 cm) H9100 Hygrometer accurately measures ambient humidity and guarantees data Suitable for home, laboratory and laboratory use Wide range of users: Ideal for individuals, workers, and scientists who need to monitor environmental humidity levels; Suitable for a variety of applications such as adjusting indoor air in home or laboratory environment Portable and compact design The 10CM H9100 hygrometer is designed for easy carrying and use. Compact size and aluminum alloy make it a tool Versatile: The 3.9 inch (10 cm) H9100 hygrometer can be used in a variety of settings. Can be used to monitor indoor air, control humidity levels, or create an optimal experiment environment With a crisp digital display, the 10CM H9100 hygrometer features a digital display screen that provides clear readings and makes it easy to check ambient humidity levels, Manufacturer: Rxgiasup