We use the mounting method described on page 7 of the following whitepaper.
http://www.chiefdelphi.com/media/papers/1743
We've never tried to measure the resolution, as it's always been more then we needed. The A/D in the cRIO is 12 bit in the range of -10 to 10v, so from 0-5v, you get 10 bits (1024 steps).