US Patent 7802634 Integrated quill position and toolface orientation display

Method and apparatus for visibly demonstrating a relationship between toolface orientation and quill position by: (1) receiving electronic data on an on-going basis, wherein the electronic data includes quill position data and at least one of gravity-based toolface orientation data and magnetic-based toolface orientation data; and (2) displaying the electronic data on a user-viewable display in a historical format depicting data resulting from a most recent measurement and a plurality of immediately prior measurements.