Design constants and measuring units

This paper presents a generalization of a method described in a previous paper by the author (“An Arrangement of the Circle Diagram” Journal of the A. I. E. E., September 1922). The author suggests an interdependence between measuring units and the design constants of a machine and employing this method proceeds to outline: 1. The “unit parabola diagram” for d-c. machine. 2. The “unit circle” arrangement of the Behrend circle diagram. 3. The “C. S. U.” (cross-section unit) reference system where length dimensions take the place of ordinary electric units in recording the electrical data of a machine. The mathematical treatment of the subject should only be considered as giving an idea of the author's intentions and not as an exhaustive mathematical survey of the possibilities and limitations of the method.