The objective of this kinematic model is to explain the special features of the Ackerman steering mechanism. The lead angle of a steering trapezoid is determined as are the disadvantages of incorrectly adjusted track rods. The units consists of two levers, an intermediate steering rod, two track rods and two track rod arms. The indicators attached to these rotate with the arms and indicate the steering angle on scales. It is possible to adjust the pointers independent of the levers. By turning an adjustment nut it is possible to change the length of the track rods. The complete arrangement is mounted on a base plate. The unit can supplied either for wall mounting or as a bench top model.