Damping torque is a motion that isn't assigned numbers while being used, but rather is tested and observed using a pointer in an experiment. A pointer of a device is the part that shows the damping torque based on a deflection torque vs time graph. This is done by taking into account both deflection and controlling torque in order to give the correct amount of damping torque. Deflection torque is what causes the pointer on the machine to oscillate, and the controlling torque is a counteractive force that stops the pointer from oscillating uncontrollably. Deflection torque and controlling torque work in a similar way to a scale, in that deflection torque is the weight that is pressed on the scale and the controlling torque is the counterweight that is used to balance out the initial weight. In order to get good results it is very important that these two forces equal one another.