Group members may find this of interest. A water powered economic model developed by Bill Philips an Engineer and Economist at the LSE in 1949. It is called the ‘Philip’s Machine’ or ‘MONIAC’ (Monetary National Income Analogue Computer).
http://www.youtube.com/...
Group members may find this link of interest, some great photos from inside one of Liverpool's old reservoir......
http://www.dailymail.co.uk/news/article-2409626/Toxteth-Reservoir-Inside-Victorian-building-supplied-fresh-water-Liverpool-the-world.html
Members may be interested to visit the ICE Panel of Historical Engineering Works database online at......http://www.ice.org.uk/Information-resources/Panel-for-historical-engineering-works
The latest entry is a 19th C watermill in Warwickshire, it's been restored and is still in use!!