English: Leavitt-Riedler Pumping Engine at Chestnut Hill Pumping Station in Massachusetts, USA. The rocking crank on the left of the red stairs has the front side connected to an inclined pump plunger rod. The rod has 30 degrees from the horizontal with 4-foot stroke of the plunger of pump proper on the left.
Date
Taken on 10 August 2014, 12:49:59 (according to Exif data)
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