Comes with calibration certificate Load direction: Right, left Torque accuracy: Right (±2%), Left (±3%) Torque adjustment range (N・m): 30.7 (7.7) to 153.4 Minimum scale (N・m): 0.1 Total length (mm): 467 Head width (mm): 71 电源(v):2 x AA电池(包括用于测试) 负载方向:右,左 扭矩准确性:右(±3%),左(±4%)