Post-World War I military weatherman prepares to release balloon to probe atmosphere for wind information. He tracked flight visually with theodolite that resembles a surveyor's transit. Data then was reported by wire to weather station.
Post-World War I military weatherman prepares to release balloon to probe atmosphere for wind information. He tracked flight visually with theodolite that resembles a surveyors transit. Data then was reported by wire to weather station.
Post-World War I military weatherman prepares to release balloon to probe atmosphere for wind information. He tracked flight visually with theodolite that resembles a surveyor's transit. Data then was reported by wire to weather station.
Description:
[Information from item housing] Weather: Misc: Balloons