Abstract: A portable and or modular alignment system for establishing the proper axial alignment of a first rotatably mounted shaft, and a second opposed, rotatably mounted shaft. The first shaft extending from a first unit, while second shaft extends from a second unit. The axial alignment of the first shaft with the second shaft is achieved by adjusting the relative horizontal and vertical position of the first unit with respect to the second unit, where the second shaft may be assumed to be fixed in position. The alignment system comprises a control and computing unit for receiving alignment information indicative of vertical and horizontal position changes to be provided to align the first shaft with the second shaft. Changes in the vertical position are provided by a plurality of vertical actuator units, while changes in the horizontal position are provided by a plurality of horizontal actuator units.