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Conversion. Automobiles to 40 mm. anti-aircraft guns. Every inch of every 40 mm. anti-aircraft gun barrel made in this…
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Conversion. Automobiles to 40 mm. anti-aircraft guns. Every inch of every 40 mm. anti-aircraft gun barrel made in this former automobile plant is examined before it receives its final approval. Here, government inspectors are shown looking into the very middle of a gun barrel through a special instrument. Chrysler Corporation, Highland Park, Detroit. Sourced from the Library of Congress.

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Conversion. Automobiles to 40 mm. anti-aircraft guns. Every inch of every 40 mm. anti-aircraft gun barrel made in this former automobile plant is examined before it receives its final approval. Here, government inspectors are shown looking into the very middle of a gun barrel through a special instrument. Chrysler Corporation, Highland Park, Detroit. Sourced from the Library of Congress.

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