However, you could still get the same result from what Tom is describing as far as a gravitational pull from a distant object.
That would seem to be the solution for most areas on earth but it still does not describe the gyroscope's tendency to point straight up and down relative to earth and space on the north or south poles even though hours pass by.
Well Celestial Gravitation in the FE hypothesis IS typified by the North and South celestial gear systems rotating against one another. Thus how we have the North and South celestial poles. So the gravitational effect of being at the center of rotation of the systems above would do the same thing.
Correct me if I am wrong because I am having a difficult time picturing it, but in a round earth setting gyros would point in the same direction if you were to fly or travel starting at one that pointed up and not have to change your course at all, and would be parallel to a line of latitude. However, if you were to walk on a straight path on a plane, and the gyros were being attracted by something rotating around the poles then there would be circles of gyroscopes all pointing tangent to those circles, therefore, the gyroscopes would appear as they were slowly becoming perpendicular to you until you reach the ice wall.
It would be helpful if someone would post a picture of what it would look like. If someone does it would be helpful to have the Celestial pole rotation, what the lines of latitude would look like, how the gyros would be attracted to this force and any other thing that would be relevant to this topic.