Land circle calculating means calculates a land circle as an approximate circle from label information. The method comprises mixing a piezoelectric ceramic powder with a polymer binder and surfactant to form a slip mixture, casting the slip mixture into a mold and setting to the slip mixture in the mold to form a green body, cutting the green body to form a cut green body with an array of micron-sized ceramic elements and separation, and sintering the cut green body to form a sintered ceramic body. The starter is configured to activate multiple times during a single drive cycle to start an internal combustion engine. A porous layer is disposed on the leeward surface of each of the blades, adjacent to a free end thereof.