6-30 in-lbs thru 120-600 in-lbs / 7-35 cm kg thru 140-700 cm kg. Accurate to ± 4% of torque reading in both directions at 20% to 100% of full scale. Industrial all steel or aluminum torque transfer components. High alloy torsion drive design — accuracy not effected by hand position. Dual scale (English/Metric) with clockwise and counterclockwise operation — fewer wrenches needed to complete job.