This instrument is designed according to DIN EN ISO 6789 – 2003 D, ISO 1174-1 A, and DIN 3120 A. It comes with a serial number, safe box, and certificate. The release accuracy tolerance is ±4% of the scale value. Torque setting can be tightened both to the right and to the left. When the torque setting is reached, the close-gap is automatically released. Desired torque value can be adjusted quickly with a simple turn of the handle, which has a safe lock. Additional features include fine scale graduation and a ratchet with a sliding scale and plastic knob, which can be pre-tightened manually. The direction of the actuation can be changed by inversing the sliding square tang of the ratchet.