| 摘要 |
Since a first arm (7) and a second arm (14) are slidable with respect to a joint (12), when a probe (22) is held at a close position, rigidity in holding the probe (22) which is held at the tip of the second arm (14) is enhanced by shortening the substantial total length of the first arm (7) and the second arm (14). Consequently, the position of the probe (22) does not change, and the intrinsic performance can be exhibited. |
