Featured are a method and apparatus for fixing adjacent vertebrate of a spine that avoids the need and associated problems with prior cage or straight rod and screw systems. The magnetic shielding material is cut to a desired size by etching to remove all burrs and debris and is then attached only to good die using a die attach film of thermoset plastic or a gob of epoxy adhesive. Identifying the points to track may include identifying points within the encasement that are significant and persistent. A photodetector receives light reflected from the inspection site and generates a reflection signal corresponding to the reflected light. The air diffuser terminal is secured in the floor opening between gripping surfaces on the flange clip and the trim ring. The time measuring section can measure a stop time of an engine, and can transmit information on the stop time to the controller when power to the controller is on.