ArcGIS relatively little nausea is 10.2 there are a lot of bug. Moreover, after setting some parameters, no state, but also to the next reset.
Under Below that, the status bar, and when shp editing, vector node coordinate information elements, how to set the display more digits.
1. coordinates on the status bar to display more digits
Set up under the Customize --- ArcMap Options.
2. Decimal node coordinates editing mode display.
In the opinion editor tool bar can be set. He suggested here, then detailed remember.