OSCILLATING WEIGHT FOR WATCH

摘要

PROBLEM TO BE SOLVED: To reduce the cost of especially an oscillating weight for a watch formed by molding and firing a compound composed mainly of a heavy metal powder from among oscillating weights used for a self-winding portable watch. SOLUTION: In the oscillating weight 10 for the watch formed by molding and firing the compound composed mainly of the heavy metal powder, a plurality of vertically striped protrusion parts 14 are formed at equal intervals in the hole diameter part of a rotation center hole 13 to which a bearing of the oscillating weight 10 is attached.