| 摘要 |
A support device includes two beams secured on top of a base and two bolts rotatably received in the beams. Two slides are slidably engaged in the beams and engaged with the bolt and for allowing the bolt to move the slide along the beam when the bolt is rotated. Two seats are secured to the slides and two brackets are pivotally coupled to the seats for supporting a plate. One or both of the brackets include a fastener for engaging with either of the orifices and for securing the plate and the brackets to the seats at various angular positions.
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