INNER PERIPHERAL LENGTH DETECTOR OF RING-SHAPED ORNAMENT

PROBLEM TO BE SOLVED: To distinguish whether or not the inner peripheral length of an ornament formed in a ring shape falls within a specified dimension by a simple method. SOLUTION: This inner peripheral length detector 20 is formed in a conical shape, and is used by arranging a display part of a management item such as a lower limit management line 22 and an upper limit management line 23 on its outer peripheral surface. The display part is arranged in a belt shape over one periphery, and a management limit point is made easily understandable by applying coloring. A sign and a dimension value for distinguishing specifications, are displayed for clearly understanding a distinction of management specifications. A cross-sectional shape of the detector is formed in an elliptic shape in response to a wrist shape in the ornament such as a portable watch. A highly accurate determination can be made by quickly understanding whether or not the inner peripheral length of the ornament such as the portable watch falls within the specified dimension. COPYRIGHT: (C)2006,JPO&NCIPI