Stylus probe method is known as a means of measuring magnetic flux in the localized area of electrical sheet steels. Although the method is more convenient as compared with the search coil method, it is not authorized as a formal method of flux measurement mainly because of the unclearness in the evaluation of the measured value. In this paper the measurement of localized magnetic flux by the stylus method was evaluated theoretically in comparison with that by the search coil method, being based on local eddy currents analysis taking into consideration the magnetic domain structure. It was shown that the local variations of emf's with measuring position by the both methods increase as the ratio of domain width to sheet thickness becomes larger, and the differences between the measured values by the two methods do not exceed a few percent for ordinary measuring conditions in oriented silicon-iron sheets. It can be concluded from various analyses that the stylus probe method can be an effective technique of localized magnetic flux measurement in electrical sheet steels.
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