I create the attribute table of a shapefile and while I copy it by using the "copy features" tool it change the precision from 11 to 14. I create two fields with the name poly_x and poly_y and they represent the centroid of the polygon.
I use ArcGis 10.2.1 and the attribute contain some text fields and two float fields which contain the X and Y coords of the cendroid of the polygon, with precision 11 and scale 3. After I use the above mentioned tool the precision is change to 14 and the scale remain the same.
I would like to mention also, when I insert the shapefiles in QGIS even if I define the precision 11 and scale 3 I see that the precision is 12 and the scale remain the same. The same thing happens when I add the data in Arcgis 9.3.1.