Close-up photograph of airplane engines being inspected and worked on. These engines were redesigned and standardized for American military use during World War One. They are 16-cylinder engines, measuring inches by inches, with a horsepower ranging from 450 to 300 at 1300-1400 rpm. Photographer: Rosenfeld.

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Size: 8389px × 5673px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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