A system and method of determining the temperature of a rotating electromagnetic machine, such as an electric motor or generator. The valve includes a valve member that is moveable between a first position in which the fuel injector is, at least partially, activated, a second position in which neither the fuel injector nor the engine compression release brake is activated, and a third position in which the engine compression release brake is activated. The mat selecting circuit activates at least one of the memory mats included in each of the memory mat groups, while maintaining the rest of memory mats inactivated. The second induction choke is also located about the piping structure of the well, but the first induction choke is distally spaced from the second induction choke. In yet further embodiments, a flare is provided near the tip of the pointer in order to reduce the force required by fingers of the user to manipulate and hold the pointer. In some implementations, the angle \u03b1 can be greater than 15 degrees, for example.