The invention relates to heat engines and more specifically to positive displacement internal combustion engines, and is particularly concerned with oscillating engines i. The fitting includes a body in which a lamp may be mounted. A selection module allows a user to select a user-defined capacity of the tape storage medium that is less than the usable capacity of the tape storage medium. The conductive member has a thickness not more than that of the acoustic matching layer and is embedded in the acoustic matching layer. The TPI features a structure and a method by which false tire pressure signals caused by changes in ambient temperature and normal tire temperature fluctuations are eliminated.