You can go to this site to test Alpha/Beta/Gamma's Read out

I am documenting Construct 2's Touch feature and created this simple read out[Only works on phones]:

http://www.bracercom.com/OrientationTest/

Hope that helps.

Can somebody do one for the Accelerometer ?

There are read out for XYZ with gravity and XYZ with no gravity and I was like OMG whatever...