SDG2-030BR,SDG3-135BR,SDG4-135BR and SDG4-200BR Digital Torque Wrench (In Pc Connectivity) Torque accuracy at +/-2.5 of indicated value Cw and ccw operation Peak hold and track mode selectable Buzzer and led indicator for the pre-settable target torque Engineering units (n-m, ft-lb, in-lb) 30~250 Data memory for recall and joint torque auditing Auto sleep after about 5 minutes idle Both aa and rechargeable batteries are compatible Date memory size: 250   Item Square drive Torque range SDG2-030BR 1/4" 1.5~30 n-m/1.1~22.1 ft-lb/13.3~265.5in-lb SDG3-135BR 3/8" 6.8~135n-m/5.0~99.5ft-ib/60~1195in-lb SDG4-135BR 1/2" 6.8~135n-m/5.0~99.5ft-ib/60~1195in-lb SDG4-200BR 1/2" 10~200n-m/7.4~147.5ft-lb/88~1770in-lb   詳細資料