| 摘要 |
PROBLEM TO BE SOLVED: To provide a three-dimensional position measuring device for hole requiring no manpower for measuring/inputting an angle of torsion, and having improved measurement accuracy. SOLUTION: This device is equipped with a tubular material 3 (9 and 10) mounted on a hole inlet HS, for inserting therein a probe tip part 1A when pulling-up of a probe 1 is finished. A projection part 24 projecting toward the outer circumferential face of the probe tip part 1A is formed on the inner circumferential face of the tubular material 3, and a guide part 25 projecting all around the outer circumferential face of the probe tip part 1A in the oblique direction around the periphery is formed. When the probe tip part 1A is inserted into the tubular material 3, it is made that the projection part 24 abuts on the guide part 25 in the axial center direction, and the abutting position is moved along the guide part 25 up to a prescribed position 27, or remains at the prescribed position 27.
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