Profile of not foreground subtracted rotation measures of the Sausage relic (left) and the Toothbrush relic (right) in sectors of 1′ width (corresponding to 5° and 2° azimuthal angle along the ring for the Sausage and Toothbrush relics, respectively) and of 3′ thickness in radius. The azimuthal angle on the horizontal axis is measured counter-clockwise from the north-south direction. The ring for each relic is centered at the approximate cluster center and follows the shape of the relic. The error bars are computed from the rms noise of U and Q in each sector.