An object of this invention is to measure the tilt quantity of, and perform a tilt control on, an optical disc accurately without depending on the rotation control method. A guided wave sensor 3 included in a guided wave inspection device 4 is mounted to the outer surface of piping 1. The packaging also includes a flap having a proximal end attached to the pocket and a distal end opposite the proximal end. Actuators move the respective slip assemblies between a retracted position in which the slip jaws clear the axial passage of the slip spool, and an extended position in which wedge-shaped slip jaws of the respective slip assemblies are inserted into an annulus between the axial passage of the slip spool to grip the tubing string. In a fixed magnetization layer or a free magnetization layer of a magneto-resistance effect element including the fixed magnetization layer, a spacer layer and the free magnetization layer; a layer containing one element selected from the group consisting of Ti, Zr, Nb, Mo, Ru, Rh, Pd, Ag, La, Hf, Ta, W, Re, Os, Ir, Pt and Au is disposed. After the exhaust, by moving the suction nozzle away from the movable lid, the movable lid may be moved upwards to place its original position the restoring force of the spring, so that the valve body may be opened.