Push Back mechanism with extra length to cover more area of seat ply giving maximum support. Initial seat angle of 3 degrees and Full recline angle of 19 degrees ensures ergonomic working. Horizontal movement of Locking lever to engage and disengage lock at upright position. Rotational movement of Gas Spring lever to operate gas spring and adjust chair height to user specification. Knob provided to adjust spring tension to suit individual user in order to ensure maximum chair comfort.