| 摘要 |
<P>PROBLEM TO BE SOLVED: To support a base part so that a bend in the base part on which a graduation is formed can become the same at all times, on a standard scale that is used for calibration, or the like, of a measuring tool of length. Ž<P>SOLUTION: The standard scale includes the base part on which the graduation is formed with an interval in longitudinal direction on top surface, and projection parts which are supporting the base part and are projecting to downward direction from an undersurface of the base part. Furthermore, the projection parts are formed with the interval in the longitudinal direction of the base part. Additionally, the projection parts are provided in a vessel point or airy point of the base part. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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