Marvin Hargrave Meteorology Kite with Meteorgraph Attached
A Marvin Hargrave weather kite with meteorograph attached. The meteorograph is an instrument that measures the pressure and temperature of the atmosphere when in flight.
Keywordskite, kites, weather kite, Marvin Hargrave Meteorology Kite with Meteorograph Attached, Kite with Meteorograph
Encyclopaedia Britannica (11th ed., vol. 18) (New York, NY: The Encyclopaedia Britannica Company, 1910)