a wire cloth for a filter has a twill lace weave which is formed in patterns alternating in the direction of the twill line . the alternation is provided substantially in the region of weft wires . at least one intermediate weft wire is introduced in the region of discontinuity of the twill line whereby the position of the weft wires in each pattern of the twill weave is fixed and a mesh size in the weave can be accurately determined .