A sensor suitable for measuring the pressure applied by a bandage is provided. The sensor comprises an elongate strip having a sensor region. The sensor region comprises: a base plate a top plate a compressible spacer positioned between the base plate and the top plate and, an electronic sensing apparatus configured to detect distance between the top plate and the base plate. The top plate is arranged to compress the compressible spacer and arranged such that the bandage exerts a force on the surface of the top plate perpendicular to the surface when the sensor is positioned between the bandage and a limb.
