for the thread the stopping device has associated with the stopping element an adjustable thread clamp for the thread held at the stopping element application_number US 19923494 A description a measuring weft feeder m according to fig1 serves to feed e g an air jet loom not shown with weft yarn sections having an exactly measured length said weft yarn sections being drawn off successively the measuring weft feeder m comprises a housing g having arranged thereon a storage body f in the form of a drum which is provided with an external storage surface 1 for the yarn y wound in turns w onto said storage surface 1 by a winding member 2 the yarn y is drawn off a yarn supply coil which is not shown and is inserted into the measuring weft feeder m where it is wound in successive turns onto the storage surface 1 by the winding member 2 said winding member being adapted to be driven such that it rotates from said storage surface 1 the yarn y is drawn off overhead i e over one end of the drum below a stopping device s which is attached to the housing g by means of a weft insertion or auxiliary nozzle 3 the stopping device s includes a selectively extendable stopping element p and a controllable yarn clamp k according to fig2 a 2b and 2c the storage surface 1 is provided with axial fingers 5 distributed in the circumferential direction one finger 5 is in alignment with the stopping device.