FIELD: wire working. SUBSTANCE: the device uses a measuring reel that is enveloped by wire and coupled with a disk, which, according to one variant, is made of eddy-current material, and according to the other variant-hysteresis material. A magnet is installed opposite the disk. When the disk is made of hysteresis material, it is coupled with the reel through a braking centrifugal clutch. During wire advance it rotates the measuring reel and disk, which is engageable with the magnet through magnetic forces. EFFECT: optimum adjustable wire tension. 10 cl, 5 dwg
