Abstract: A spacer for fixation to a construction element, for maintaining a relative distance to another construction element, and for restricting at the maintained distance a movement about a position that is relative to another construction element, the spacer having a structure that: a) provides resiliency and generates a force for enhancing a distance relative to another nearby construction element when distance to that other construction element is reduced to a predetermined distance, and b) provides restriction of a movement of the structure in at least one direction that is different from the direction of predetermined distance.