Abstract: A one-half turn inductor is formed in a mold having a series of spaced ribs forming grooves therebetween, a U-shaped coil has its bight portion positioned in a selected one of the grooves corresponding to the inductance value of the inductor with the legs of the coil projecting beyond the cavity. Plastic is introduced into the cavity to create a coil form with the coil embedded in the plastic. The ribs and grooves form an inspection window consisting of spaced parallel rungs, one of said rungs being an exposed segment of the coil, the remainder being plastic.