Aakee and Crab,
If you google the UH-60 MTF ( Maintenance Test Flight Manual ) and look at chart 5-1 in the back, it will answer your discussion.The one that is online is a 1997 chart, but it illustrates the underlying principles you are after.It reflects a check done at flat pitch and is therefore a crosscheck on low pitch rigging. Data base is the same used for the production flight test aircraft.