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![Early testing of hydrogen filled balloons for radiosonde measurementsTheodolite used to track balloon to limit of visibility wea01106.jpg Early testing of hydrogen filled balloons for radiosonde measurementsTheodolite used to track balloon to limit of visibility](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_wea01106.jpg?itok=hwSePfnQ)
Description
Early testing of hydrogen filled balloons for radiosonde measurementsTheodolite used to track balloon to limit of visibility
Collection
Weather Service
Exploring the Atmosphere
Kites and Balloons
Keywords
Instruments
Balloons