| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a ring sizer stick that can measure the inner diameter of a ring without any damage when the ring sizer stick is inserted into the ring to measure the inner diameter of the ring, and has no variations in dimensional precision when manufacturing the ring sizer stick in the ring sizer stick, wherein a ring is inserted from the tip of a measurement section and a numeric value of a position where the ring stops is read to determine the inner diameter of the size of the ring. Ž<P>SOLUTION: The surface of a parent body 2 in the ring sizer stick 1 made of aluminum having the tapered measurement section 3 toward a tip direction while having a circular section for measuring the inner diameter of the ring is coated with a fluororesin film 9. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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