A convenient stripline technique for generating the 210 magnetostatic mode has been used to measure the 4nM8 of planar-anisotropic ferrite materials. White has described the use of magnetostatic modes as a research tool. Precision measurements by Dillon, Fletcher, and others have used waveguide cavities to obtain rf field components required to excite the desired magnetostatic modes. These techniques have been extended to permit a simple 4nM8 measurement in a nonresonant transmission line. An rf strip transmission line with a hole in the center conductor will effectively couple to the 210 magnetostatic mode of a ferrimagnetic sphere centered within the hole. The 110 mode can also be excited by axially withdrawing the sphere to a linear rf magnetic-field location. The 4nM8 of high anisotropy, hexagonal ferrites as well as more conventional cubic (YIG) ferrites have been measured using this technique. It is seen that the resonance equations for the 210 and 110 mode in a spherical resonator may be solved in general for the saturation magnetization in terms of only the externally applied magnetic fields. (ω210/γ)2=[H210−(8πMs/15)+Tx][H210−(8πMs/15)−Tz] (ω110/γ)2=(H110+Tx)(H110−Ty),=4πMs=(15/2)(H210−H110),where Tx and Ty represent anisotropy contributions. Measurement of pure YIG and MnZnY spheres indicate that the absolute values for 4nMs may be between 2 and 10% high, dependent on circuit dimensions. Additional material properties and measurement variables will be presented.