Aeron Chair Arm Angle Adjustment
To swing arms in or out: While seated, grasp front end of armpad and pivot it to the left or right.
Adjusting arm angle can help support different types of work and shifts in posture.
Swing chair arms inward for support while using keyboard. Swing arm out to support use of computer mouse.
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Aeron Chair Arm Height Lever Adjustment
Increased tilt tension provides more stability and back support while you recline. Too much resistance may make it difficult to recline.
Depending on weight and preference, different people will require different levels of tilt resistance.
Aeron Chair Arm Height Wheel Adjustment
To increase tension: While seated, turn knob forward (clockwise, toward + sign).
To decrease tension: While seated, turn knob backward (counterclockwise, toward – sign).
Depending on the desired tilt resistance, a number of turns may be required.
Aeron Chair Forward Tilt Adjustment
To raise: While taking your weight off chair,
lift lever up.
To lower: While seated, lift lever up.
Aeron Chair Height Adjustment
Instructions on this video show all possible adjustments. Specific adjustments vary according to chair model.
Aeron Chair Posture Fit Adjustment
* Unique Pellicle Material
* Fully Adjustable Vinyl Arms
* Back Tension Adjustment
* Tilt Tension Adjustment
* Tilt Lock
* Forward Tilt
* POSTUREFIT LUMBAR SUPPORT SYSTEM
* Seat Height Adjustment
* Casters
Aeron Chair Tilt Limiter Adjustment
Anyhow, the instruction is good (but I will never put it my play list).
Aeron Chair Tilt Tension Adjustment
Again, the sound is terrible but information is useful.
Aeron Chair Lumbar Support Adjustment
What happened with the sound in this video 
Herman Miller Aeron Chair campaign
This is the funniest bit of guerilla marketing i have seen in ages -
Well Done Studio Boartdman
