When Bill Phillips is mentioned most people think of the Phillips Curve. However, while a student at the LSE, Phillips used his training as an engineer to develop MONIAC, an analogue computer which used hydraulics to model the workings of the British economy, inspiring the term hydraulic macroeconomics. A live demonstration of the only working MONIAC in the Southern Hemisphere. This is located in the Reserve Bank Museum & Education Centre, Wellington, New Zealand. The video below is very informative.