PURPOSE: To simplify accuracy adjustment of the heading device and prevent same device from breakage when defective parts in accuracy are mixed, by providing part locating holes in a rotary table and air curtain in the vicinity of said hole while arranging part inductors near the table.

CONSTITUTION: A plurality of parts are put into a part inductor 9f on a rotary table 7 which is rotated counterclockwise by a drive mechanism 12. Then, the parts are introduced by part introductors 9aW9f so that the parts having the position conforming to the shape of part locating hole 8 fall into said holes 8. Also, parts except for ones positively falling into the part locating holes 8 are removed from the periphery of the hole 8 by an air curtain formed by a jet nozzle 10 and the part inductors 9d, 9e. Thus, since accuracy in the position of the part inductors 9 is not required, this device can be adjusted for a short time and defective parts in accuracy which did not fall securedly into said holes can be removed by the air curtain.