Pre-setting of the torque by turning the knurled ring at the end of the handle, fixing it by sliding it into position. Clearly legible scale display. Additional micro scale for fine adjustment: 1 rotation = 1Nm. Scale ring with 0.10Nm graduation. With 1/4" square drive (6.3mm) for holding sockets and self-locking adapter with spring sleeve for holding 1/4" (6.3mm) standard bits in a form fitting manner. Accuracy +/- 6%. Total length 165mm.