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Cutting thread sectors on a howitzer with a shaper, in the Erie, Pennsylvania, General Electric plant. A dividing head provided with a clamp which fits over the muzzle end of the tube has been adopted for indexing. These seventy-five millimeter pack howitzers are being produced largely on machinery formerly used for making streetcar motors. Sourced from the Library of Congress.
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Cutting thread sectors on a howitzer with a shaper, in the Erie, Pennsylvania, General Electric plant. A dividing head provided with a clamp which fits over the muzzle end of the tube has been adopted for indexing. These seventy-five millimeter pack howitzers are being produced largely on machinery formerly used for making streetcar motors. Sourced from the Library of Congress.

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Cutting thread sectors on a howitzer with a shaper, in the Erie, Pennsylvania, General Electric plant. A dividing head provided with a clamp which fits over the muzzle end of the tube has been adopted for indexing. These seventy-five millimeter pack howitzers are being produced largely on machinery formerly used for making streetcar motors. Sourced from the Library of Congress.

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