Abstract
Presented in the previous paper is the rotation of vertical pointer shaft under mechanical vibration. This paper reports that under the same condition, not only vertical pointer shaft but also horizontal one rotates likewise and causes a significant instrumental error. Horizontal pointer shaft gets into a relative hopping motion with its radial bearings and rotates, for example, two steps for each one cycle of vibration. Instrumental error is apt to become so large, reaching about 90 degrees. This phenomenon relates to sort and dimensions of bearings and vibrating condition. No pointer shaft, if it has sliding bearings, can be free from instrumental error of this kind.
