A method of reducing the effect of disturbances in the galvanometer branch of a potentiometer circuit
Frank Wenner · Journal of research of the National Bureau of Standards · 1939
The method described automatically eliminates the effect of a thermoelectromotive force in the galvanometer branch and doubles the sensitivity of the galvanometer to a lack of balance of the potentiometer, thus reducing to half the effect of various types of electrical and mechanical disturbances.