Left- German radiosonde RS-3, assembled, showing the pressure and humidity
elements. Right: German radiosonde RS-3, assembled, showing the temperature
element. Volume 3, No. 1 of the Army Air Forces Weather Service Bulletin, p. 2.
Image ID: wea03643, NOAA's National Weather Service (NWS) Collection Credit: Headquarters Weather Wing Army Air Forces; Courtesy of the family of Nels Johnson, United States Weather Bureau (dec.)