The TU 3 Laser Shaft Alignment Tool is designed to check the shafts in machines and facilities and for the optical alignment of the shafts. This reduces machine downtime and prevents premature bearing failure. By means of the TU 3 Laser Shaft Alignment Tool the relative position between two coupled machines, such as an engine and a pump, can be alternated to the point that the axis line of the shafts align during common operation. The measuring process with the TU 3 Laser Shaft Alignment Tool is based on two laser probes, which measure the vertical and horizontal displacement and angular deviation. Other parameters, including the thermal expansion and tolerance, can be included into the measurement process of the TU 3 Laser Shaft Alignment Tool. Spacer discs can be simulated by means of the Laser Shaft Alignment Tool as well. Other functions include the soft foot measurement, cardan shaft - mode, and plain-grade of surface. After measuring these parameters, the measured data is shown on the large display of the Laser Shaft Alignment Tool before being stored on the 2 GB data memory card. The data can be sent via USB or Bluetooth easily to a computer, where the data can be further processed, analyzed, and archived.