Abstract :
Paul MacGahan (Westinghouse Electric and Manufacturing Company, Newark, N. J.): The authors have presented one more important example of a fact that is being recognized gradually by instrument engineers — that principles of operation having been well established, and that modern methods of manufacture with highly developed tool equipment having been more recently applied, the designers now look to new materials for the next big step in progress. Among new materials, the magnetic alloys are the most important which have become available for instrument use.
