| 摘要 |
<p>An orientation apparatus (1) which includes at least one locating means (2,4), a guiding means (42), and a control means (38) guided by the guiding means. The orientation apparatus is connectable in use to a separate rotatable means (24) and the locating means is adapted to restrict the rotational movement of the rotatable means to rotational movement in use about a selected axis of rotation. The orientation apparatus also includes a remotely operable control means which is adapted to allow or effect disengagement of a rotatable means engageable in use with an anchoring means (14).</p> |
