1、2‑way reading error CW±2%, CCW±2.5%, can be used for forward and reverse rotation, improve work efficiency. 2、This product has 4 kinds of torsion units to switch freely: kgf.cm, N.M, lbf.ft, lbf.in. 3、With sound and light alarm function and backlight function, convenient for operation at night or in places with insufficient light. 4、3 working modes can be switched freely: real‑time mode, peak mode, preset mode. 5、The power supply is 2 AAA batteries, simple and convenient, very practically. Item Type: Digital Display Torsion Meter Model: ZNC-30 Minimum Graduation Value: 0.01N.M Maximum Operating Range: -30N.M Connector: 1/2 (the instrument comes with 1/2, and plus one 1/4 and 3/8) Torsion Accuracy: CW ±2%, CCW ±2.5% Battery Information: 2 x AAA batteries (not included) Product Description: The digital torsion meter is a torsion monitoring instrument with a ratchet wrench. It is used for various tightening and disassembly control forces. It has multiple functions such as simple operation, portable, multi-unit conversion, sound indication, and forward and reverse adjustment. Suitable for industries such as automobiles, bicycles, and various mechanical maintenance. 1 x Digital Display Torsion Meter 2 x Conversion Head (1/4 and 3/8)