Abstract: A hard disk drive actuator pivot-base tower clearance spacer mechanism may be positioned at least in part between an enclosure base tower structure, on which a pivot shaft of a pivot bearing assembly is disposed, and the pivot shaft. The spacer mechanism is positioned to affect the clearance between an actuator of which the pivot bearing assembly is part and the base tower structure, such as to limit unwanted tilting of the actuator relative to the tower. The clearance spacer mechanism may comprise an elastic cap or may comprise a spring mechanism configured to fit over the top of the base tower structure so as to compress the spacer mechanism while positioned between the tower structure and the pivot shaft.

Abstract: A timepiece apparatus is provided in which a bottom cover is attached to a lower end of a case. The bottom cover supports and positions a timepiece module within the case via a support. A thin magnetic member of a proper size is positioned at the support so as to face toward an antenna built in the timepiece module.