Calibration and correction of an artificial limb for one patient and the limb works with the Pneumatic and hydraulic systems. Note that the calibration has been done through a special application of smart phones. The process of calibration and testing for patient done in the department with the presence and supervision of the head of the department Ph. Dr.Wisam kazim hamdan and The head of the Bio instrumentation Medical Devices Branch is Dr. Marwan Nafie Ali and the Director of the Warith CenterFor prosthetics Ph.Dr. Yasser Sobeih.