| 摘要 |
A leveling head (25) for a camera has four jacking screws (90) attached to a base plate (70). A ring (122) is pivotably attached to a hub (100) on the base plate (70). A top plate (130) is pivotably attached to the ring (122) and supported on the jacking screws (90). The top plate (130) can pivot along two perpendicular axes relative to the base plate (70), to provide a level mounting surface for a camera. A spring (112, 114) on the base plate (70) pushes the top plate (130) upwardly, to partially counterbalance the weight of the camera, to reduce the turning force needed on the jacking screws (90). |
