The Sperry Gyro-Compass. Sperry Gyroscope Company

True North

       Table of Contents

      The Magnetic Compass

      The Mag­ne­tic Com­pass does not point to True North, it points to Mag­ne­tic North, which is about 800 miles from the True North Pole.

      The Sper­ry Gyro-Com­pass

      The Sperry Gyro-Com­pass, which is not a Mag­ne­tic Com­pass, and is not af­fect­ed by a mag­ne­tism of any sort, and de­rives its di­rec­tive force from the earth’s ro­ta­tion, points True North. It does not point to the Mag­ne­tic North Pole.