| 摘要 |
A mechanism for mounting a support including a three bar linkage attached to a base by a mounting member, the mounting member having a pair of slots wherein the three bar linkage may slide and pivot relative to the mounting member. In another embodiment, the mechanism may include a height indicator whereby the height of the mechanism relative to a height indicating surface is displayed. In a further embodiment, the mechanism may include an angle indicator whereby the angle of the support relative to an angle indicating surface may be displayed. In yet another embodiment, the mechanism may include means for adjusting the angle of the support relative to the angle indicating surface.
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