| 摘要 |
There is provided a reference gage that has first and second reference planes parallel to one another and perpendicular to a rotational axis of the reference gage, and a distance between the reference planes is already known as a reference distance. To calibrate the measuring head, the measuring direction of the measuring head is set parallel to the rotational axis of the measuring head or the table on which the reference gage is placed, and a reference value of the reference distance on the reference gage is entered. Then, the reference distance is measured by the measuring head to acquire measured data, and a measured value of the reference distance is calculated from the measured data. The measuring head is calibrated so that the measured value accords with the reference value. The time required for calibrating the measuring head is thus reduced.
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