The present invention provides a rolling bearing, for a tenter clip, which is capable of restraining deterioration of a sealing member even though the sealing member contacts ester oil, and is excellent in reliability and durability at high temperatures. The system may include an acoustically designed shroud forming a cavity and configured for attenuating noise produced by a cooling air fan associated with the engine. Also, even though the write protection information stored on a disc does not match the state of a recognition switch of a case for write-protection, the data can be prevented from unwanted overwriting or erasing. Concentrically arranged conductor strips enable the hot-plate to be constructed easily, the design thereof ensuring that the surface thereof is used in an optimum manner and providing a high degree of heating efficiency by virtue of the homogeneous manner in which the partial areas are heated. With the set of the protrusion, the electrical connection between the electrical connector and a chassis panel may be improved and reliable. The computation means is configured to compute a parallel-shift quantity and a rotation angle of the observed screen.