Breakback type Torque Wrench

This model is a simulation of "breakback" type torque wrench which is a wrench that breaks/bends once the required tightening torque is reached.
This print is just for the proof of concept and not for the functionality specially for such a small scale (150mm).
Larger scale model can be functional but with more stiffer rubber bands like the ones used in slingshots and sure it will be limited to lower grade (e.g. 4.6) and smaller size bolts/nuts (not more than M12).
For those who are really usi