PURPOSE: To simplify the tooling necessary for producing various locating shapes and to produce the component element necessary for a metallic plate by forming a protrusion of an approximately linear portion extending from the plate and a dome shaped portion extending from the linear portion.

CONSTITUTION: Both of the first locating shape 56 and the second locating shape 58 apart a spacing therefrom are disposed. Both locating shapes 40 extend outward from the upper front surface 46 of a first sheet metal sheet plate 42. When a pair of the locating shapes 40 are used, the second sheet metal plate 52 includes a second hole 59 having the shape of a long-sized slot formed at the second sheet metal plate 52. The second locating shape 58 is fitted as a pair into the slot 59 of the second sheet metal plate 52. The slot 59 permits the distance error between the hole 54 and the slot 59 and extends toward the first locating shape 56 in order to prevent the relative rotation of the first and second sheet metal plates 42 and 45.