Provide a correcting device capable of being placed onto a nail without applying an excessive force to the nail or of being properly applicable for correcting nails having different sizes. The correcting device includes a left arm and a right arm, each having an engageable part disposed on a free end so as to be engageable with a side edge of a nail； and a fulcrum member disposed between the left and right arms and having a lower end serving as an abutting part for contact with the nail. The fulcrum member includes a shaft part combined with the base member so as to be vertically movable with respect to the base member by screw movement, a movable member combined with the shaft part so as to be vertically movable with respect to the shaft part and having the abutting part under the shaft part, and an urging member interposed between the shaft part and the movable member so as to urge the movable member. The abutting part extends in left and right directions and has projections disposed on left and right edges such that the projections are adapted to be abutted against the nail while the abutting part is not abutted against the nail between the left and right projections.本發明係提供一種：可不使過剩的力量作用地裝著於指甲，且對於尺寸不同的指甲之矯正可分別適當地利用之矯正器。該矯正器，係具有：左側臂及右側臂，其在自由端具備對指甲之側緣部進行勾引的勾引部、及支點構件，其在左側臂與右側臂之間將下端部作為對於指甲的抵接部。支點構件，係具備有：對於基體可朝上下方向螺旋進退地組裝之軸體、及對於該軸體可上下移動地組裝而使上述抵接部配置於該軸體下之可動體、以及夾裝在該可動體與軸體之間並對該可動體彈壓之彈壓構件。抵接部，係於左右方向較長，且於左端和右端分別具備突出部並以該突出部抵接於指甲，而在左右之突出部間並不抵接於指甲。
