Head series M 156 is a compact system to measure tensile forces on:

cables, stranded-wire, wires, tapes etc.

The smooth, in ball-bearing running rollers, can be adjusted to the material, which should be measured.
By means of a light turn, the measuring head can easy be threaded in the running material too.
Both the outer guide-rollers guide the material in a defined angle over the measuring roller.

Due to the deviation, the resulting radial force is measured by the head. It is proportional to the tensile force.