| 摘要 |
A chair construction in which a rotating seat causes counter rotation of a mirror secured to an arm extending upwardly from underneath the seat. Cam means disposed in the rotating mechanism of the seat retain the face of the mirror during rotation of the seat tangential to a circle having its center forward of the center of rotation of the seat. The angular adjustment of the mirror face is transmitted from the cam means and a flexible shaft to a rotatably mounted post, forming a part of the upstanding arm, to which the mirror is secured.
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