A machine designed for testing canister springs, specifically the compression type, as part of the research conducted by the Chemical Warfare Service's Research Division during World War One. The machine was designed by Fogler and received from the Chemical Warfare Service. (Photograph taken on July 12, 1918)

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Size: 8486px × 5794px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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