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.
Digital Commonwealth — Boston Public Library

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.

United States. Aerospace Audio-Visual Service · [ca. November 1970]

CC0 — Public Domain
Digital Commonwealth — Boston Public Library

[Information from item housing] Weather: Misc: Balloons

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