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Inventions of the great war (1919)

Bond, A. Russell (Alexander Russell), 1876- · New York, The Century co. · leaf 170

An illustration from Inventions of the great war, 1919, leaf 170
irplane; but the best work was done withlarge cameras fitted with telescopic lenses, ortelephoto lenses, as they are called. Someof these were built into the airplane, with thelens opening down through the bottom of thefuselage. The scouting-airplane carried a machine-gun,not for attack, but for… … 20 mitesperhour 60 miltiB per hour 100 milesaar hour

Inventions

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