original and intact depression era c. 1929 antique american industrial four-legged riveted joint steel factory machine shop stool designed and fabricated by the angled steel company, plainwell, mich. the refinished factory stool retains the original solid birch wood seat with sunken center. the riveted and welded joint base with stretchers provides added stability and durability. the circular-shaped seat has been lightly sanded and sealed. the brushed metal base has been treated with a clear coat lacquer. great overall condition. measures 15 x 15 x 26 inches.