an auxiliary member or accessory serves to reduce or limit the length of a weaving reed for the purpose of adapting it to the desired weaving width , so that the same reed can be used for differing weaving widths . the auxiliary member or accessory can be a stretching device or a detection device for the inserted weft threads . a flange of the auxiliary member is inserted between two reed lamallae or dents and is fixed on the rear side of the read by means of a locking element .