5-10-15-20 Area of Effect (AOE)

We have one set of the old 1/8" wire AOE guides in our group and I am concerned they might get bent or broken. The geometry is pretty basic so I made these in Tinkercad, and included the intended area as raised numbers along the edges.

The areas are based on this image: http://i.stack.imgur.com/R9Zyw.jpg