Sturdy body construction insures maximum durability. Easy to read laser marked single scale. Large easy to read dial is shock resistant and protected by a tough metal guard. Memory needle retains highest torque reading applied. Calibrated in both CW and CCW direction. Accuracy: 4% of indicated value, CW CCW, from 2% to 1% of full scale. Individually serialized with matching certificate of calibration traceable to N.I.S.T