I will try it also. It's a tool that could be useful in adjusting or readjusting quickly. I had moved my saddle and got slower (I felt anyway) and it took a while to get back there. Wish I had that locked in.

There is also a great app for angles which I have used on head tube and seat tube. Just hold phone up to it and bam. Relaxed or agressive determined more precisely. Am going to post the angles of my Tourer build if I can finish it. Just because.