Visualization of magnetic flux density using the CT (Computed Tomography) method was presented by using a reduced number of probe terminals. In this method, the sensor (CT probe) is composed of only the patterned coil plane, and can visualize two-dimensional magnetic flux density of a vertical component with the plane. The distributed data can be observed without scanning motion by use of a multi-layered CT probe. To obtain more effective measurement, we propose a new shape for the coil pattern with a switch function; this design permits display of an alternative magnetic flux density.