I was tired of leveling the X-Axis of my bed slinger with glue sticks so I made this simple jig.

Instructions for use: Turn off your printer, set the jig on the bed under your X-axis, move the X-axis arm down (or up depending on where your arm is) until it rests on top of the jig. If one of the sides is higher you will see a small gap and know you need to adjust and what side. 

I wont go into adjustment as printers may vary but if you are looking at printing this, you probably already know how or where to find instructions for your printer.