Roller Bridge or inclined plane for transferring vessels from one level of waterway to another. 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 'Architecture Hydraulique' Bernard Forest de Belidor, (Paris, 1737).

Roller Bridge or inclined plane for transferring vessels from one level of waterway to another. 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 'Architecture Hydraulique' Bernard Forest de Belidor, (Paris, 1737).

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50.8 x 30.3 cm | 20.0 x 11.9 in (300 dpi)