alternatively or additionally a non conductive adhesive can be used to secure the pcbs 10 20 together to provide increased mechanical stability resistance fig2 a shows a perspective view of a spacer 1 according to an embodiment of the invention the spacer 1 may be formed of a plastic material and may have a generally l shape with a plurality of locating pins or contacts 4 along an upper surface 2 thereof the contacts 4 extend from the upper surface 2 to the lower surface 3 a terminal 4 may respectively be secured in one or more of the contacts 4 the contacts 4 may be flush with the surfaces 2 3 or may be raised therefrom a 5 contact spacer 1 is shown in fig2 with the contacts 4 allowing the spacer to equally distribute a compression load among the five contacts 4 distributed along the upper surface 2 of the spacer 1 however additional or fewer contacts 4 are possible the spacer can also have alignment posts 5 on the upper surface 2 and the lower surface 3 that fit into a corresponding hole in the pcb 10 20 to align the upper 2 and lower 3 surfaces with the respective pcb 10 20 the spacer 1 may include alternate geometries or sizes to.