move in one of the degrees of freedom. if the system is over-constrained it can cause the system to break down under deformation, extra care needs to be taken when designing an over-constrained system. Kinematic coupling designs only make contact with the number of points equal to the number of degrees of freedom that are to be restrained and therefore are predictable. See also Kinematics Kinematic determinacy Precision engineering References External links http://pergatory.mit.edu/kinematiccouplings/ http://kinematiccouplings.org/ http://precisionballs.com/Kinematic_cook_book.php Linkages (mechanical)