Integrated calibration sphere and calibration step fixture...

Geometrical instruments – Gauge – With calibration device or gauge for nuclear reactor element

Reexamination Certificate

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Reexamination Certificate

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07908756

ABSTRACT:
A method and apparatus for mounting a calibration sphere to a calibration fixture for Coordinate Measurement Machine (CMM) calibration and qualification is described, decreasing the time required for such qualification, thus allowing the CMM to be used more productively. A number of embodiments are disclosed that allow for new and retrofit manufacture to perform as integrated calibration sphere and calibration fixture devices. This invention renders unnecessary the removal of a calibration sphere prior to CMM measurement of calibration features on calibration fixtures, thereby greatly reducing the time spent qualifying a CMM.

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