Abstract: A device is provided for achieving a seal between the edge portions of two metal plates which are used as screens against electromagnetic fields, the device including a metallic sealing strip which is intended to be compressed along these edge portions. The sealing strip (1) comprises a helically wound metal element with a cornered cross section, and the edge portion of one metal plate (6) is intended, by engaging against a support (4), to be pressed against the sealing strip (1) both in the cross-sectional and in the longitudinal direction of the strip, so that the turns of the helically wound metal element are twisted in the longitudinal direction of the strip in relation to their original positions. Parts of the cornered sides of the metal element will thus be pressed against said edge portions, which gives good metallic contact.

Abstract: In order to fix the position of two printed wiring connectors located on the same circuit board an attaching bar is used. This bar is laid over the connectors and is provided with positioning pins adapted to engage the attachment holes of the connectors. The bar is provided with mounting studs having mounting holes at some distance from the edge of the card so that corresponding holes in the card will not weaken the edge.