This is based on the assumption that you have a Quattro (or similar) 4in1 ESC mounted to the bottom of your quadcopter. It houses a bubble level and holds the quad in place for calibration of the accelerometer (or just working on it).
Remember to come back and post what you've printed as Make.
It's good for the designer and the community (that means you)!
To post a Make, come back to this Thing and click Post a Make.
Or, you can use the Thingiverse Mobile app found on
and the Apple App Store.