Function: The wrench is an instrument indicator for measuring the of threaded fasteners, which can be tested arbitrarily within the range. Suitable for fastener testing with high precision requirements From the pointer still staying on the indicating scale value, the value can be accurately read. Rotate the knob on the top of the dial to reset the slave pointer to zero for the use. Wrench shape: combination wrench Wrench head type: fixed ratchet head Scale display mode: window display scale Minimum : 0 (m) Maximum : 100 (m) 1. The zero position must be adjusted use. 2. When using, apply tightening force slowly and steadily until the pointer reaches the required value. 3. After the force is stopped, the active pointer will automatically return to zero. Precautions: 1. Do not disassemble or knock at will, so as not to affect the accuracy of the product. 2. Avoid contact with high temperature to avoid damage. 3. Do not use beyond the range. colour:Black+silver Material:Metal Package Contents: 1 x digital wrench Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.