Australia first changed to Metric in 1974 yet today we still have some industries who still work with imperial measurements. This is despite the education system teaching only the metric system! We have developed a "bastardised" system in some industries. It is not unusual to hear talk of a motorhome 22 feet with a 3.0 litre engine. or on a building site using timber 4" x 2" x 3.4metres long. Education is a start but sometimes you have to wait until all the dinosaurs are full extinct before you can fully move on!