Vaisala Oyj is a major provier of environmental measurement systems, such as weather instruments, dropsondes, hygrometers, barometers, and other devices. Vaisala offers a comprehensive range of products that provide the measurement data necessary for forecasting the weather, protecting the environment and improving the safety of air and road traffic. In industrial settings Vaisala products help to enhance the efficiency of manufacturing processes and improve the working environment, as well as reduce adverse impacts on the environment.