| 摘要 |
<p>Apparatus tor adjusting the angle of an obect about an axis mounted on a surface cornprising an upper plate (112) onto which the object is mounted and a lower plate (110) which in turn is mounted onto the surface, a track located on the inner surface of one of the upper and lower plates, a ball (122) located between the upper and lower plates, the ball being in contact with the at least one track in the upper or lower plates, wherein the track is arranged such that when the ball is moved in a first direction, the ball is raised and causes the plates to move apart and wherein when the ball is moved in a second opposite direction, the ball is lowered and causes the plates to move together.</p> |
