Backsquare for spirit level (Actioncam adjuster)

The needed spirit level of 15x15x40mm are sold at Amazon in packs of 5 for a few Euros. The problem is that an overhead-mounted action camera has basically not flat edges available to hold the spirit level to, while you adjust the camera. This problem is solved by this part. 

Simply print this part from any material. I have printed mine from PLA on an Ender3Pro. It is very simple to print in the uploaded orientation. No supports or brim are needed. Infill is not critical (I have used 100%, as the part is very small anyway).

Happy printing and happy action filming! Don't overdo the crazy stuff while you film with your action camera, play safe!