This torque tester is designed for use with click type torque wrenches and has one measurement unit - Newton Meters & Foot Pounds It features simple operation with only one button on the unit used to zero the display.
Operating Range: 10-350 N.m & 10-260 Lb.Ft
Accuracy of + / - 1% over operating range
Comes with traceable calibration certificate
Drive size: 1/2" square