Understanding what Tilt represents

I cannot figure out how to make use the a devices Tilt. All I’m trying to do is make my quads rotate based on the tilt from the device.

Here is my setup.

The device is set to Portrait.
The device is standing straight up (iPAD home button on the bottom)
I have a quad centered at 0,0,0 facing the camera.
The camera is looking down the -Y axis into the scene with the quad front and center.
When I rotate the device to the left I want the quad to mimic the rotation to the left.
When I rotate the device to the right I want the quad to mimic the rotation to the right.

How can this be achieved?
So far I’ve tried setting the quads (ActorRotation) to the Tilt->MakeRotationFromAxes where Tilt is the forward axis. The results are not right.

I cannot find any good documentation on this so far.

Thanks,
-jeff