There is provided a method for producing a friction plate, capable of improving the throughput of friction material and reducing the time and work required for adhering friction material segments to a core plate. A tire tester is configured to receive a parameter of a tire of the vehicle. As a result, it is possible to realize a low-cost distributed Raman amplifier of a simple configuration, capable of realizing an automatic gain control with high precision and also capable of compensating for gain wavelength characteristics using a fixed gain equalizer. The transmission-type screens have curved surfaces which are inclined to face toward a lateral direction with respect to a front of the display shelf, so that the transmission-type screens are easily viewable by viewers who are in the lateral directions of the display shelf. The power to all surgical insulting instruments is interrupted, however, upon either the detection of the sudden motion by the accelerometer of the base unit or the reception of the radio frequency signal from the remote units. The radiation detecting unit has radiation detectors, arranged in a two-dimensional array, for detecting radiation transmitted through an object as electrical signals.