Abstract: A teaching aid for spinal mobilization and manipulation therapy is described which includes a first support on which is mounted a spinal model. A second support underlies the first support. A third support underlies the second support. The third support has a cavity into which the second support is telescopically received. Telescopic movement of the second support relative to the third support occurs when a force is applied to the first support. A load sensor is disposed between the first support and the second support whereby a force with which the first support is pressed toward the second support is measured. A plurality of springs are disposed between the second support and the third support to provide resistance to telescopic movement of the second support relative to the third support. A displacement sensor is secured between the second support and the third support whereby the displacement of the second support relative to the third support is measured.