How the mechanism adjusts:

Back Angle
Back angle adjusts forward and rearward. Some chairs lock in an infinite number of positions

Back Height
Back height adjusts up and down and locks in various positions.

Seat Angle
Seat angle adjusts independently of the backrest using a single lever.

Seat Depth
The backrest can be moved in and out to allow additional seat depth.

Seat Height
Seat height can be increased or decreased with either a pneumatic or manual adjustment.

Forward Tilt
A 6 degree forward seat tilt is available if desired or it can be locked out.

Multi-Tilt
Seat and back tilt simultaneously at the same ratio. Multi-tilt action can be locked out in an infinite number of positions.

Knee-Tilt
Seat and back tilt simultaneously at the same ratio from a pivot point under the front of the seat. Knee-tilt action can be locked in an infinite number of positions.

Synchro-Tilt
Seat and back tilt at a two to one ratio. Synchro-tilt action can be locked in an infinite number of positions.

Tilt Control
Seat and back tilt simultaneously at the same ratio. A tilt-lock control is available on some models.

Tilt Tension
Degree of tilt tension can be increased or decreased.

Swivel
360 degree swivel only. Chair does not tilt. Fixed height chairs do not tilt.