| 摘要 |
PROBLEM TO BE SOLVED: To provide a reference gauge capable of acquiring more accurate calibration than a current gauge, regardless of diameters of measurement pins of measuring machines. SOLUTION: A calibration fork body 10 which has been calibrated comprises, as main components, three block gauges 1, a base 2, and a cap 3, with the three block gauges 1 superposed together while a central block gauge is dislocated much from the other two. The assembly of the three block gauges 1 is symmetrically positioned against the calibration fork body 10 which has been calibrated, with a protrusion 13 of the block gauge disposed at the center. Due to the assembly of the three block gauges 1, the reference dimension can be measured by the outside dimension of the protrusion as well as by the inside dimension of the measured calibration fork body. COPYRIGHT: (C)2003,JPO
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