Hi, This isn't my field at all so please excuse my ignorance. Let's say I have a pipe positioned at 30 degrees to the horizontal and an inclinometer attached to the pipe in a vertical position. Now I rotate the pipe some amount about it's long axis. The inclinometer reads 15 (or whatever) degrees of rotation. How would you determine how much the pipe actually rotated? Thanks. I hope I made myself clear. Let me know if I haven't.