adhesively attached to the polyimide part of the copper was removed by a conventional photoetching process except in the area of the desired configuration for conductor 12 and the remaining conductor was plated with gold in a conventional manner the conductive layer is less than twenty five microns in thickness the sheet 10 including the conductor 12 is very flexible and conformable to differing elevations or possible angular misalignment of the conductors 14 and 16 such that a good connection is consistently produced the flexible sheet medium 10 is backed by a body 20 of elastomeric material which may comprise a foam but which preferably comprises a so called solid elastomer such as a silicon elastomer having a durometer hardness of approximately forty in any event the body 20 suitably has a dielectric constant close to that of air and consequently has substantially no electrical effect on the connection the sheet material 10 can be secured to the underside of body 20 which is normally substantially flat with an acrylic based adhesive or a pressure sensitive adhesive however the manner of attachment is not particularly critical the medium 10 is placed in contact with circuit devices 18 and 19 with conductive layer 12 in juxtaposition with conductors 14 and 16 while the body of elastomeric material 20 is compressed toward circuit devices 18 and 19 by means of a bar 22 secured to underlying circuit housing 24 by machine screws 26 and 28 the.