GT Helion Rear Wheel Truing Gauge

I made this so I could true the wheels on my Helion while on the bike. Will need to tap 2 holes for M4 thread and open one hole for M4 pass through. I used 2 M4 x 30mm Nylon screws, one I ground a bit of a point on. I also added some rubber tape inside the clamp area to make the unit stay put and not scratch my frame.