Vaisala
![A GPS sonde (RS92), approx 220 × 80 × 75 mm (8.7 × 3.1 × 3 in)](/Images/godic/202502/19/GPS_sonde_ready0012.jpg")
![GPS radiosonde (RS92) in ground check set (GC25), used to perform a 'ground check' and also recondition the humidity sensor](/Images/godic/202502/19/GPS_sonde_and_MW150012.jpg")
![An earlier design radiosonde (RS80)](/Images/godic/202502/19/Radiosonde_RS600012.jpg")
![Vaisala Marwin Rawinsonde Set MW 12](/Images/godic/202502/19/y_Aerographer's_Mate_3rd_Class_Antoine_Giacometti_programs_information_into_a_weather_data_receiver_before_the_release_of_a_weather_balloon_at_a_forward_operating_location_in_the_British_India0012.jpg")
- For the village in Samoa, see Vaisala, Samoa
Vaisala (Finnish pronunciation: [ˈʋæi̯sælæ]) is a Finnish company that develops, manufactures and markets products and services for environmental and industrial measurement.
The major customer groups and markets are national meteorological and hydrological services, aviation authorities, defense forces, road authorities, the weather critical energy sector, life science and high-technology industries and building automation.