Comes with calibration certificate Torque adjustment range (N・m): 10 to 50 Minimum scale (N・m): 0.01 Total length (mm): 375 Insert angle (mm): 9.5 Power supply (V): AA batteries: 2 units Torque accuracy: Right/Left (±3%) Load direction:右/左 :铝制外壳,USB电缆,CD,AA电池:包括2个单元