partial class Examples
{
  public static Result DisplayPrecision(RhinoDoc doc)
  {
    var gi = new GetInteger();
    gi.SetCommandPrompt("New display precision");
    gi.SetDefaultInteger(doc.ModelDistanceDisplayPrecision);
    gi.SetLowerLimit(0, false);
    gi.SetUpperLimit(7, false);
    gi.Get();
    if (gi.CommandResult() != Result.Success)
      return gi.CommandResult();
    var distance_display-precision = gi.Number();

    if (distance_display-precision != doc.ModelDistanceDisplayPrecision)
      doc.ModelDistanceDisplayPrecision = distance_display-precision;

    return Result.Success;
  }
}

from Rhino.Commands import Result
from scriptcontext import doc
import rhinoscriptsyntax as rs

def RunCommand():
    distance_display_precision = rs.GetInteger("Display precision",
        doc.ModelDistanceDisplayPrecision, 0, 7)
    if distance_display_precision == None: return Result.Nothing

    if distance_display_precision != doc.ModelDistanceDisplayPrecision:
        doc.ModelDistanceDisplayPrecision = distance_display_precision

    return Result.Success

if __name__ ==  "__main__":
    RunCommand()