A system for the alignment of a plate, the system comprising an external U-shaped plate profile, a plate stabilizing device and an alignment tool, the plate stabilizing device being configured to couple with the external U-shaped plate profile, the device comprising: an external segment, corresponding in shape to the external U-shaped plate profile and configured to fit therein; and an internal segment, configured to accommodate a bottom portion of the plate, characterized in that the external segment comprises a socket adapted to at least partially accommodate the external alignment tool through a passage serving as a turning point for the external alignment tool, the internal segment comprising an alignment tool wedge-like portion capable of accommodating a tip of the alignment tool, wherein the internal segment comprises an elastic bottom portion configured to resist movement of the internal segment along a longitudinal axis of the external U-shaped plate profile, wherein the internal segment is configured to move, within the external segment, transversally to the longitudinal axis of the external U-shaped plate profile when the external segment is forced by alignment tool to move along the longitudinal axis; and wherein the external segment is configured to be moved by the alignment tool when the alignment tool is inserted through the passage at the wedge-like portion such that the alignment tool is rotatably turned about the passage thereby sliding the external segment along the longitudinal axis, wherein the external segment further includes at least one second window configured to accommodate at least one corresponding second projection of the internal segment, and wherein the at least one second projection is configured to cause the tranversal movement when sliding abut inclined surfaces of the corresponding second window. an external segment, corresponding in shape to the external U-shaped plate profile and configured to fit therein; and an internal segment, configured to accommodate a bottom portion of the plate, characterized in that the external segment comprises a socket adapted to at least partially accommodate the external alignment tool through a passage serving as a turning point for the external alignment tool, the internal segment comprising an alignment tool wedge-like portion capable of accommodating a tip of the alignment tool, wherein the internal segment comprises an elastic bottom portion configured to resist movement of the internal segment along a longitudinal axis of the external U-shaped plate profile, wherein the internal segment is configured to move, within the external segment, transversally to the longitudinal axis of the external U-shaped plate profile when the external segment is forced by alignment tool to move along the longitudinal axis; and wherein the external segment is configured to be moved by the alignment tool when the alignment tool is inserted through the passage at the wedge-like portion such that the alignment tool is rotatably turned about the passage thereby sliding the external segment along the longitudinal axis, wherein the external segment further includes at least one second window configured to accommodate at least one corresponding second projection of the internal segment, and wherein the at least one second projection is configured to cause the tranversal movement when sliding abut inclined surfaces of the corresponding second window.