A reseat system, comprising: a fixed component; a movable component having a stylus to be stilled at a predetermined rest position; a first reseat component provided on the fixed component; and a second reseat component provided on the movable component to be in contact with the first reseat component at a pair of predetermined contact points, wherein, when an outside force is applied to the stylus, the tip of the stylus of the movable component can be displaced relative to the fixed component by releasing contact of the first and the second reseat components at the contact points and, when the outside force is ceased to be applied to the movable component, the movable component returns to the rest position by a biasing force applied to the movable component in a direction from a base end of the stylus to a distal end thereof; and characterized in that either one of the first and the second reseat component is a cylinder having a larger outer diameter on a side remote from the stylus than the outer diameter on a side adjacent to the stylus and the other is a pair of balls, the first and second reseat components each being provided at three places mutually spaced apart by 120 degrees on the fixed component and on the movable component respectively; whereby: assuming that the first reseat component and the second reseat component corresponding thereto keep contact with each other and the stylus moves while keeping an axis of the stylus parallel with an axis thereof at the rest position, a locus drawn by the tip of the stylus crosses the axis of the stylus at the rest position; and the locus drawn by the tip of the stylus is inclined in the direction of the biasing force as being separated from the axis of the stylus at the rest position. a fixed component; a movable component having a stylus to be stilled at a predetermined rest position; a first reseat component provided on the fixed component; and a second reseat component provided on the movable component to be in contact with the first reseat component at a pair of predetermined contact points, wherein, when an outside force is applied to the stylus, the tip of the stylus of the movable component can be displaced relative to the fixed component by releasing contact of the first and the second reseat components at the contact points and, when the outside force is ceased to be applied to the movable component, the movable component returns to the rest position by a biasing force applied to the movable component in a direction from a base end of the stylus to a distal end thereof; and characterized in that either one of the first and the second reseat component is a cylinder having a larger outer diameter on a side remote from the stylus than the outer diameter on a side adjacent to the stylus and the other is a pair of balls, the first and second reseat components each being provided at three places mutually spaced apart by 120 degrees on the fixed component and on the movable component respectively; whereby: assuming that the first reseat component and the second reseat component corresponding thereto keep contact with each other and the stylus moves while keeping an axis of the stylus parallel with an axis thereof at the rest position, a locus drawn by the tip of the stylus crosses the axis of the stylus at the rest position; and the locus drawn by the tip of the stylus is inclined in the direction of the biasing force as being separated from the axis of the stylus at the rest position. assuming that the first reseat component and the second reseat component corresponding thereto keep contact with each other and the stylus moves while keeping an axis of the stylus parallel with an axis thereof at the rest position, a locus drawn by the tip of the stylus crosses the axis of the stylus at the rest position; and the locus drawn by the tip of the stylus is inclined in the direction of the biasing force as being separated from the axis of the stylus at the rest position.