A contactless switch provided by the present disclosure is coupled to a signal input device and receives a magnetic signal generated by a magnetic trigger mechanism. A carrier signal generated in the external processing unit is fed to a primary coil located within the crank case and the secondary coil, loosely coupled to coil and tuned for resonance therewith is located in the skirt of the piston. Using the method of the invention, a ceramic coating can be completely removed from the component and any cooling holes, with essentially no degradation of the bond coat. The recording apparatus further includes a diaphragm displaced upon reception of air pressure on the air flow passage and output generation means for generating a control signal based on the displacement amount of the diaphragm, and driving the air pressurizing pump is controlled by the control signal generated by the output generation means. The method includes determining a capture pose; determining a pose of a subject for photographing; and photographing the subject automatically based on a similarity between the capture pose and the pose of the subject. In the assist grip, the grip member is rotatably jointed to the rotation arm, and the grip member is provided with a release dog formed therein, the release dog configured to release the rotation arm from being held by the holding member as the grip member is rotated.