A photograph showing a Dynamo or motor generator set manufactured by the Westinghouse Electric Co. in Pittsburgh, Pennsylvania. The unit consists of a single rotatable armature with a commutator on each end. This photo was taken on February 29, 1918.

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Size: 7982px × 6303px
Photo credit: © piemags/NSC / Alamy / Afripics
License: Licensed
Model Released: No

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