A leveling device helps to prevent misalignment in the axial direction of an adjusting screw with respect to a shaft. A shaft 20 has an insertion cylindrical portion 21 that is in a generally cylindrical shape, and a shaft-side engagement portion 23 that is connected in the axial direction of the insertion cylindrical portion. An adjusting screw 27 has an insertion shaft portion 28 that mates with the insertion cylindrical portion of the shaft, and a screw-side engagement portion 31 that engages with the shaft-side engagement portion. The insertion shaft portion of the adjusting screw has an irregular portion 28a that is press-fit into the insertion cylindrical portion of the shaft, and that restricts movement in the axial direction with respect to the shaft.