release accuracy: ±3 % tolerance of the set scale value, repeatable and precise with at least 5000 load cycles, for controlled right-hand and left-hand tightening, change of actuating direction by inserting the square of the drive, double scale in Nm and lbf graduation for precise setting, large viewing window with magnifying glass function optimizes readability, with push-button quick-release function on the ratchet head, clearly audible and perceptible torque release by short travel release, quick and safe torque adjustment by turning the handle, secure locking option on the handle, ergonomic and user-friendly 2-component handle with soft zone, square drive to DIN 3120 - ISO 1174 with ball lock, individual serial number for clear product identification, including calibration declaration of conformity to DIN EN ISO 6789: 2003 - traceable to national standards