As a student learning and unlearning painting, hours were spent translating a three dimensional world onto a two dimensional surface. Recently, I found a book at a local second hand store, published as a show catalouge for an exhibition at the Tate Gallery in London, England. Fifty cents bought a read through some of the ideas expressed in the classes of the seventeenth century artist JMW Turner. Who, it turns out was also a lecturer on the subject of perspective. His stories reveal some of the roots of practice in early European studios and contemporary ideas and methods that he himself developed to measure and quantify space.