Williss Elements of Quantity Surveying has become a standard text in the teaching of building measurement a core part of the curriculum for quantity surveyors. It has eclipsed the other books on building measurement, partly because its heritage, but mostly because of the logical approach and copious use of examples to guide the student. The 12th edition will be fully updated to follow the measurement rules recently published by the Royal Institution of Chartered Surveyors (the New Rules of Measurement volumes 1 and 2), and to introduce Building Information Modelling (BIM) as a core element of future building projects.  Alongside this thorough revision a supporting website with project drawings divided into small sections for student self-testing of their measurement ability, and 3D models to explain different aspects of construction technology where relevant to measurement rules will be available.