Use: Controlled screw tightening in the range of 30 - 80 lbf in High-speed, controlled tightening enables serial production Electrical and electronic hardware industry, instrument-making industry and industrial manufacturing or in quality control Features: Adjustable torque screwdriver - with scale With 1/4" female hexagon drive for use with 1/4" hexagon bits as per DIN 3126 - C 6.3 With adaptor also suitable for 1/4" square drive sockets as per DIN 3124 Working accuracy: +/- 6 % tolerance of set torque Acc. to DIN EN ISO 6789, traceable to national standards Precision radial ball clutch and cam design for controlled bi-directional tightening Precision mechanism slips very noticeably when the pre-set value is achieved Automatic resetting to the starting position 3 models in the range 0,2 Nm to 9 Nm Micrometer graduation: 1 lbf in or 0.1 lbf in Lightweight construction by virtue of anodised aluminium handgrips Scope of delivery: Torque screwdriver Typ 757 1/4" square/h