A device adapted to correct an unbalance of a turbocharger, comprising a jig for supporting a work having a rotating portion (21, 22, 23) and including vibration detecting means for detecting vibration, wherein when fixing the work to the jig where the rotating portion (21, 22, 23) being rotatable, the rotating portion (21, 22, 23) rotated at a given rotation number and performing an unbalance correction of the rotating portion (21, 22, 23), based on a detected value by the vibration detecting means, the device comprising: a plurality of pawl structures for clamping and fixing the work on the jig, with being biased in predetermined directions where the work is fixed on the jig in the engaged condition where they are engaged with the work supported by the jig; characterized in that the device further comprises: a plurality of moving and biasing means for moving the pawl structures in moving directions including the predetermined directions and for biasing the pawl structures on the engaged condition in the predetermined directions, said moving and biasing means being provided on each of the pawl structures; a plurality of adjusting means for adjusting moving amounts of the pawl structures in the predetermined directions by the moving and biasing means and biasing forces for the pawl structures in the predetermined directions, said adjusting means being provided with respect to each of the moving and biasing means; a plurality of position detecting means for detecting positions of the pawl structures in the predetermined direction on the engaged condition, said position detecting means being provided with respect to each of the pawl structures; and a plurality of adjusting means control means for controlling each of the adjusting means such that shifting amounts of the positions in the predetermined direction of the pawl structures, from the predetermined reference positions, on the engaged condition detected by the position detecting means, based on detected signals from the each position detecting means, become smaller than given acceptable values preliminarily determined for the shifting amounts. a plurality of pawl structures for clamping and fixing the work on the jig, with being biased in predetermined directions where the work is fixed on the jig in the engaged condition where they are engaged with the work supported by the jig; characterized in that the device further comprises: a plurality of moving and biasing means for moving the pawl structures in moving directions including the predetermined directions and for biasing the pawl structures on the engaged condition in the predetermined directions, said moving and biasing means being provided on each of the pawl structures; a plurality of adjusting means for adjusting moving amounts of the pawl structures in the predetermined directions by the moving and biasing means and biasing forces for the pawl structures in the predetermined directions, said adjusting means being provided with respect to each of the moving and biasing means; a plurality of position detecting means for detecting positions of the pawl structures in the predetermined direction on the engaged condition, said position detecting means being provided with respect to each of the pawl structures; and a plurality of adjusting means control means for controlling each of the adjusting means such that shifting amounts of the positions in the predetermined direction of the pawl structures, from the predetermined reference positions, on the engaged condition detected by the position detecting means, based on detected signals from the each position detecting means, become smaller than given acceptable values preliminarily determined for the shifting amounts. a plurality of moving and biasing means for moving the pawl structures in moving directions including the predetermined directions and for biasing the pawl structures on the engaged condition in the predetermined directions, said moving and biasing means being provided on each of the pawl structures; a plurality of adjusting means for adjusting moving amounts of the pawl structures in the predetermined directions by the moving and biasing means and biasing forces for the pawl structures in the predetermined directions, said adjusting means being provided with respect to each of the moving and biasing means; a plurality of position detecting means for detecting positions of the pawl structures in the predetermined direction on the engaged condition, said position detecting means being provided with respect to each of the pawl structures; and a plurality of adjusting means control means for controlling each of the adjusting means such that shifting amounts of the positions in the predetermined direction of the pawl structures, from the predetermined reference positions, on the engaged condition detected by the position detecting means, based on detected signals from the each position detecting means, become smaller than given acceptable values preliminarily determined for the shifting amounts.