Public domain
Antiaircraft gun carriage. The traversing bearing is installed on a thirty-seven millimeter antiaircraft gun carriage as it moves down the assembly line. These precision-built ball bearing installations are vitally important, for on their unfailing smooth action depends the gunners' ability to follo
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Credit lineAntiaircraft gun carriage. The traversing bearing is installed on a thirty-seven millimeter antiaircraft gun carriage as it moves down the assembly line. These precision-built ball bearing installatio. 1941-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.
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