WORTEX ETS 2520 circular machine ruler stop rear

The parallel stop on this machine, due to the curved design, tends to be installed parallel to the saw. Because of this, the workpiece is sawn into a wedge. The rear bar is loose and does not have a sufficient plane for support. The rear support model is installed in the guide, forming a large support plane. 
The handle with the M6 nut installed adjusts the lever force.