Abstract: The invention features an improvement in an adjustable chair having a base, a seat coupled to the base and arranged to move with respect to the base along a center line plane of the chair, and a back hingedly connected to the seat to allow an adjustment of relative angular reclining position of the seat and back in response to movement of the seat. The claim further has a coupling and guiding assembly for coupling the seat to the base, for guiding forward and backward movement of the seat with respect to the base, and for frictionally holding the seat at any of a continuum of desired positions with respect to the base.