Insize IST-TT550, DIGITAL TORQUE TESTER, 487~4867in.lb/40.6~405.6ft.lb, 6928640326134

Accuracy ?1% (clockwise and counter-clockwise). Resolution 1in.lb/0.1ft.lb. Square socket 3/4″.
With external sensor, to test torque wrenches, torque screwdrivers and other torque tools
Unit: in.lb, ft.lb, N.m, kg.cm.
Clockwise and count-clockwise operation
Peak, track and first peak working mode.
Low and high limits with judgement.
Automatic power off