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Production. Airplane propellers. Arthur Voss performs final blade balancing tests on a Hamilton airplane propeller at a Hartford, Connecticut, plant. This propeller, which will help to power one of our new warplanes, must be balanced and adjusted to the utmost detail to fit it for the important duty it must perform. Sourced from the Library of Congress.

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Production. Airplane propellers. Arthur Voss performs final blade balancing tests on a Hamilton airplane propeller at a Hartford, Connecticut, plant. This propeller, which will help to power one of our new warplanes, must be balanced and adjusted to the utmost detail to fit it for the important duty it must perform. Sourced from the Library of Congress.

More