Social class can be measured unofficially by researchers or using official scales recognized by the government. An example of an official scale is the Registrar Generals scale which was used in Britain from 1911 to 2000 and used by the government to measure social class. This model was divided into two main classes, the middle class and the lower class. Each class was then divided into separate categories based on the individual's skill level. This system was relatively simple and easy to understand. However, the Registrar General scale has been separated into classes based on profession and not individual, meaning that individuals who are wealthy and living off investments or inheritance would be excluded from this particular scale and would not be seen not assign a class position. a clear picture of each person's position in society. Because the Registrar Generals scale measures occupation and does not take into account people's views on their class position, for example a person from a middle class background may have a working class job but may not consider as a worker.