a contact switch assembly and method for its manufacture utilizing a resilient dome having electrically conductive surfaces which is positioned on a unitary sheet of plastic or membrane which has a circuit pattern deposited thereon , the circuit pattern forming the contact and contactor means of the switch . in assembly , said membrane is folded upon itself so that the contact and contactor are positioned in a spaced - apart alignment , separated by the resilient dome , whereby upon depression of said dome , electrical contact is established between the contact and contactor through the electrically conductive surfaces of the dome .