How do I adjust a drafting chair for correct ergonomic posture?

First set the seat height so your feet rest on the foot ring with thighs parallel to the floor or slightly angled downward. Your forearms should be level with the work surface — adjust the surface height or chair height accordingly. Set lumbar support to fill the natural curve at the small of your back. If armrests are present, set them so your shoulders are relaxed — not raised or dropped. At OfficeFurniture2go.com, we include adjustment instructions with every drafting chair — call 1-800-460-0858.