Abstract: Two types of sheet metal parts of an assembly, such as a small electrical switch, are mounted on a continuous strip of easily deformable material in side-by-side alternating relationship so that each part of one type has a part of the other type adjacent thereto on each side. When the parts are assembled to a workpiece, such as a circuit board, the strip is fed to an assembling station to position the leading first part of the strip at the assembly site. The leading first part is assembled to the workpiece and the strip is then indexed to position the leading second part in proper alignment with the workpiece. The second part is then assembled to the workpiece, the strip is again indexed, and the workpiece is repositioned for the next assembly sequence.