Centre for Alternative Technology
20th century ; 21st century
Information board explaining the principles of the Hydraulic Ram. (Photographed in 1989)
© Sheffield Hallam University
For educational use only. This image may be used in print or digital materials provided that full acknowledgment is given, expressed as follows: " © < insert details from the 'Rights' field >. Photographed by < insert details from the 'Photographed by' field >."
Museums -- Wales -- Machynlleth
Information display systems