Hypercube Evolution Belt Calibrator

I just rebuilt one of my HEVO's and when I tightened the belts, I thought they were about the same, but I was not really sure. After asking the question about belt tension testing on the HEVO FB group, I was directed to search here. Well nothing really was HEVO specific or simultaneously tested both belts. So I came up with little contraption, which is basically a balance beam scale sideways. It works by pulling on both belts at the same time and if one is tighter you will see that they don't align. The test location is intended to be between the left and right rear pulleys and then use the batman hook on the X-gantry. See the pictures (NOTE: the one picture is pre-batman X-Gantry hook and put unnecessary tension on the belts...but it was the only pic I had where in use) . Adjust the belts until they both overlap each other and then the tension should be the same.

Items needed:
2 x M3 screws and nuts
1 x light extension spring
...and of course a HEVO :-)

Enjoy!