In all types of engineering work considerable difficulty is found in determining stresses in structural members at several different points simultaneously. In the airplane structure, in spite of the wide theoretical and experimental background to draw upon for the computation of stresses in flight, there are frequent instances where direct measurement of the strains developed in certain maneuvers is not only the most desirable method, but the only rational method of stress analysis. Conversely, the direct measurement of strains in certain clear-cut members in flight may be carried back to arrive at the true magnitudes of the external loads in question. These strain records, in parallel with records of the accelerations involved, furnish a picture of the action more simple and direct than a series of computations which may involve many approximations and assumptions. The 6-element McCollum Peters electric telemeter was obtained for use in connection with static and dynamic tests and also for use in flight.