Stock Photo - Roller Bridge or inclined plane for transferring vessels from one level of waterway to another 1737 Inclined planes were a cheaper alternative to locks Water power is being transferred from the waterwheel, R, through gearing to the windlass at H From

Stock Photo: Roller Bridge or inclined plane for transferring vessels from one level of waterway to another  1737  Inclined planes were a cheaper alternative to locks  Water.

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