| 摘要 |
A tilt adjustment section (400) tiltably holds a strut (200). A weight section (500), which applies a load to the strut in the direction of gravitational force, is attached to the strut (200). The load of the weight section (500) stabilizes the strut (200) in the direction of gravitational force. The tilt adjustment section (400) fixes the strut (200) in a state where the strut (200) is stabilized in the direction of gravitational force. A head (100) is connected to the strut (200). The strut (200) is rotatably connected to the tilt adjustment section (400). Therefore, the head (100) can be rotated without tilting the strut (200). |
