| 摘要 |
A pivot shaft member 8 is disposed at a central portion of an IC platform 2, and a pivotal operation portion disposed at a head portion of the shaft member 8 is exposed on an upper surface side of the IC platform 2. The shaft member 8 and the IC platform 2 or a socket board 1 are connected with each other by cam means. The IC platform 2 is guided between a higher position and a lower position by a pivotal operation of the pivot shaft member 8 in order to adjust an IC supporting height.
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