Torque meter

This is a simple torque meter to measure the hold torque of small motor like stepper motor. By means a known weight connected to the torque meter by means of a string, we can measure the torque using a simple formula:
Torque[cNm]= weight[N] x arm[mm] x 0.1

the torque meter give the dimension of the arm in order to equilibrate the torque of the motor. The measure of the arm in [mm] can be read directly on the torque meter.