According to US standard scale division in lbf.ft ± 3% accuracy from the scale value (in the direction of operation for right-hand thread). For left-hand thread, use our torque wrenches with insert socket. Safe: tactile (short release) and acoustic (snap element). Quickly and securely set the desired torque value by turning the handle. HiPer fine-tooth ratchet in 6127-1CT (90 teeth, 4° operating angle). Knob for additional locking of the setting. Secure storage in a safe box with a viewing window. Comes with calibration certificate and serial number. DIN EN ISO 6789-2:2017, DIN 3120, ISO 1174-1. Made in Germany. Output: Square 12.5 mm (1/2 inch). Dimensions / Length: 660 mm. Net weight: 1.65 kg. Nm min-max: 67.8 - 339 Nm. lbf min-max: 50 - 250 lbf.ft. Tolerance: 3%. Scale division (lbf.ft): 2 lbf.ft. Effective length of the torque wrench min-max l1 mm: 565.98 - 551.88 Nm. Operating force min-max kg: 12.2 - 62.6 kg. Number of teeth: 32 (operating angle 11.25°). Head thickness a: 19.6 mm. Head width b: 44 mm. No more back-turning: HAZET torque wrenches from the 5000 and 6000 series have been proven in long-term endurance tests to not require back-turning to the smallest scale value.