Deviation and direction gauge means

Claim 1

A DEVIATION AND DIRECTION GAUGE MEANS COMPRISING AN OUTER HOUSING, AN INNER CASING DISPOSED WITHIN SAID OUTER HOUSING AND MOVABLE RELATIVE THERETO, DEVIATION INDICATING MEANS DISPOSED WITHIN SAID INNER CASING AND DIRECTION INDICATING MEANS ALSO DISPOSED WITHIN SAID INNER CASING, ONLY A SINGLE PENDULUM MEANS MOVABLY MOUNTED WITHIN SAID HOUSING AND OPERATIVELY INTERCONNECTED WITH BOTH SAID DEVIATION INDICATING MEANS AND SAID DIRECTION INDICATING MEANS, AND MEANS FOR AUTOMATICALLY CONTROLLING THE RELATIVE DIRECTIONAL POSITION OF SAID INNER CASING AT ALL TIME TO MAINTAIN A SUBSTANTIALLY CONSTANT REFERENCE DIRECTION THEREOF, MEANS FOR CENTERING SAID OUTER HOUSING SUBSTANTIALLY CENTRALLY WITHIN AN ASSOCIATED BORE WITHIN WHICH THE HOUSING IS DISPOSED, A DRIVE MOTOR MOUNTED WITHIN SAID OUTER HOUSING AND SECURED THERETO, SAID INNER CASING BEING DRIVINGLY INTERCONNECTED WITH SAID DRIVE MOTOR, SAID MEANS FOR AUTOMATICALLY CONTROLLING THE POSITION OF SAID INNER CASING COMPRISING A CONTROL CIRCUIT FOR CONTROLLING THE OPERATION OF SAID DRIVE MOTOR, SAID CONTROL CIRCUIT INCLUDING MAGNETIC MEANS ADAPTED TO MAINTAIN A SUBSTANTIALLY CONSTANT MAGNETIC HEADING, SAID PENDULUM MEANS BEING SWINGABLY SUPPORTED FOR SUBSTANTIALLY UNIVERSAL MOVEMENT, SAID DIRECTION INDICATING MEANS INCLUDING A FIRST RESILIENTLY URGED CONTACT MEANS AND MOVABLE WITH SAID PENDULUM MEANS, A FIRST FLAT PLATE-LIKE CONTACT MEANS MOVABLE WITH SAID PENDULUM MEANS, A SECOND PLATELIKE CONTACT MEANS ADAPTED TO ENGAGE SAID FIRST RESILIENTLY URGED CONTACT MEANS AND BEING CONNECTED IN AN ELECTRICAL CIRCUIT TO PROVIDE AN INDICATION OF THE DIRECTION OF ORIENTATION OF THE PENDULUM MEANS WITH RESPECT TO A REFERENCE DIRECTION, SAID DEVIATION INDICATING MEANS INCLUDING A SECOND RESILIENTLY URGED CONTACT MEANS FIXED TO SAID INNER CASING AND ENGAGING SAID FIRST PLATE-LIKE CONTACT MEANS AND CONNECTED IN AN ELECTRICAL CIRCUIT TO COOPERATE THEREWITH TO PROVIDE AN INDICATION OF THE AMOUNT OF DEVIATION OF THE PENDULUM MEANS WITH RESPECT TO ITS NORMAL POSITION WHEN THE APPARATUS IS DISPOSED IN A TRUE VERTICAL POSITION.