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The hoisting mechanism of the great roller dam at Schweinfurt, Germany, showing the the rack in the masonry abutment, upon which the cylinder moves.
Source: Steve Kirch, collector, and creator of a great website about SCIENTIFIC AMERICAN in the past
Restoration by: magscanner
- Created on
- Thursday 24 March 2011
- Posted on
- Thursday 24 March 2011
- Visits
- 1439