This paper suggests a method of measuring the microwave tensor susceptibility and the effective linewidth using the same sample in both the non-resonanee and re-sononce regions. In this method the applied steady magnetic field can be rotated to form a certain specified angle with the microwave magnetic field, so that the effect of the measured sample on the quality factor of the resonant cavity can be adjusted. The iterative method used by C. E. Patton in the calculation of effective linewidth is extended to the calculation of the components of microwave tensor susceptibility. A brief description of the experimental set and the results of the measurements are presented.