Abstract: An improved biomedical electrode comprising two snap together portions which may be assembled with a layer of elastic fabric between the two portions. At least one of the portions carries a conductive electrode and a lead for making connection to a recording system. An improved electrode cap comprises an elastic cap carrying a plurality of the snap together electrodes. An improved method of assembly includes the use of a generally head shaped block having a plurality of rods extending from the surface to hold one portion of the electrodes while the elastic cap is stretched over the block so that the rods may be used for alignment of the electrode second portions with the first portions and allow the assembly to be snapped together and simultaneously permanently mounted on the cap.