The present invention is directed towards a method of manufacturing a sensor disc for use as a dry electrode in a skin conductance measuring device, the sensor disc comprising a plurality of layers of different materials and the method of manufacturing comprising the steps of etching a copper base layer electroplating the copper base layer with an intermediate bright copper layer plating the intermediate bright copper layer with an intermediate palladium plated layer and, plating the intermediate palladium plated layer with a gold plated surface layer. The advantage of a method of manufacturing a sensor disc in accordance with the present invention is that a roughened surface is created by the etching. This increased roughness corresponds to an increase in surface area of skin in contact with the sensor disc. The larger contact area implies a larger sweat layer between skin and metal, resulting in reduced electrical impedance and hence an improvement in the signal-to-noise ratio of the skin conductance signal detected by the sensor disc. Furthermore, the surface roughness assists in trapping the sweat, also leading to reduced impedance and an improvement in the signal-to-noise ratio of the detected signals. Moreover, in addition to the high performance of the sensor discs manufactured by this process, the sensor discs produced also meet the ergonomic and aesthetic expectations of a contemporary mass market and may be advantageously utilised in a consumer electronics product.La présente invention concerne un procédé de fabrication dun disque de capteur, à utiliser sous forme délectrode sèche dans un dispositif de mesure de conductance de la peau. Le disque de capteur comprend une pluralité de couches de différentes matières. Le procédé de fabrication comprend les étapes consistant à : graver une couche de base en cuivre réaliser un dépôt électrolytique de la couche de base en cuivre avec une couche en cuivre brillant intermédiaire plaquer la couche de cuivre brilla
