Hi, Bret; as Brian noted, you still need to take backlash into account, which is one reason I added the iGaging scaled to my 7x16. They can also slip/skip if you turn the hand wheels too fast (most easily seen when withdrawing the tailstock).
I had some significant issues with the ones I bought 3 years ago, but LMS worked with me getting (slightly) revised heads with better QC out to me. I also made modifications to mine eliminating metal-to-plastic contact between the rotating & stationary internals.
Happy New Year, Charlie
