Accuracy: ± 2% between 20% and 100% wrench capacity. Measuring mode: peak or follower. Measuring unit: N.m, lbf.ft, lbf.in and kg.cm. Bits: 9 x 12 and 14 x 18 mm. Numbered wrenches supplied with ISO 6789 calibration certificate. Presetting possible of 9 torque. Memory 250 values with PC USB link. Supplied in plastic case with foam interior.