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Pleasantville Venturi meter. .. Contract 55. April 26, 1912.
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description
Pleasantville Venturi meter. .. Contract 55. August 22, 1911.
Picryl description: Public domain image of an arch stone structure, bridge, or tunnel, free to use, no copyright restrictions.
Pleasantville Venturi meter. ... Contract 55. July 5, 1912.
Picryl description: Public domain photograph of a pipe, pipeline, excavation, free to use, no copyright restrictions.
Pleasantville Venturi meter. ... Contract 55. August 22, 1911.
Public domain scan of artwork related to technological or industrial history, free to use, no copyright restrictions image - Picryl description