Ok here is what I got for you. The way I measured the center out measurement was by measuring the center hole I got .880 then subtracting. 440 fro the total because I measured from the outside of the hole. I figured it would be more accurate this way.
I got total length 3.474
Center of hole to the end of pad 2.075
Center to outside of adjusting nut 1.36
If you add the numbers up I'm. .037 off some where If that is not close enough I can remeasure no problem at all. I include some pics just to make sure this is exactly what your asking for. Let me know if you need anything else.