late 1920's american antique industrial four-legged riveted joint steel factory machinist stool designed and fabricated by the angled steel company, plainwell, mich. the fully adjustable height nicely worn stationary american industrial stool retains the original pressed and folded steel wood seat tightly affixed to the legs. the riveted and welded joint base with horizontal stretchers provides added stability. the circular-shaped seat and base have been lightly cleaned. the extensions contain several holes for achieving desired height. traces of old green paint evident. measures 20 inches high and 13 5/8 inches in diameter.