Measuring and navigation apparatus for conducting and controlling drilling rigs for underground drilling; downloadable software and recorded software for conducting and controlling drills and drilling rigs

Measuring and navigation equipment for controlling and steering drill installations for underground drillings, namely, inertial measurement units, optical gyroscopes, accelerometers, pressure sensors, strain gauges, magnetic field sensors, mechanical dynamically-tuned gyroscopes, radio frequency direction finders, global positioning systems, length measuring gauges, and dead-reckoning systems; Computer software for controlling and steering drilling machines and drill installations