Yes, I presently have a printed/laminated azimuth circle on the ground board with a pointer on the rotating base. It's setup to north obviously, and I do use a digitial inclinometer on the tube to get my Alt angle. This works ok, but I find I have to bend down to see the azi numbers and increments when setting that, and the inclinometer can only be seen from the side (has a magnetic base so sits on top of the tube.
I have found a US DIgital Alt encoder that looks good for my application as it does not require any complicated ALt trunnion modification - it simply mounts on the tube.
http://www.usdigital.com/products/in...incremental/t5