Hydraulic Computers
In the Art Gallery of SIGGRAPH 2005, the conference in Los Angeles, was an hydraulic computer model of water management. This was created by David Birchfield, David Lorig and Kelly Phillips at Arizona State University.
Two hydraulic computers are on display at the Polytechnical Museum in Moscow. In appearance, one sees a heavy steel cabinet with 20-30 graduated glass tubes vertically arranged on the front. No doubt the pumps and other controls are hidden inside. I would have photographed them but the museum wanted $50 for each snapshot.
Bill Phillips' MONIAC (Phillips Hydraulic Computer) also known as the "Financephalograph" which was built to model the UK economy.
Wikipedia on the "Financephalograph."
Twelve to fourteen machines were built...On display at the New Zealand Institute of Economic Research (NZIER).
In the Meade Room, Department of Applied Economics, Cambridge.